TTCA Arrangements Companies in the UK: Practical Overview
This practical guide offers a clear overview of UK companies that provide specialist support with TTCA Arrangements within the CASS framework. Rather than ranking them, we explore what these companies actually do and the types of support they offer to FCA-regulated businesses.
Companies in this space range from larger practices with broad regulatory capabilities to more focused specialists who concentrate primarily on client asset protection and collateral structures. Each brings different strengths in handling Title Transfer Collateral Arrangements, from detailed compliance reviews to ongoing advisory support for professional clients.
Whether you need assistance with TTCA setup, risk assessment, or maintaining robust controls, this overview gives you the context to compare approaches and decide which companies align best with your specific requirements.

Acumon
Acumon is a UK firm of chartered accountants and registered auditors providing specialist CASS audit services with a particular focus on TTCA Arrangements. The firm supports FCA-regulated companies in meeting their obligations under the Client Assets Sourcebook, with emphasis on client money, safe custody assets, and title transfer collateral arrangements.
Acumon works with a range of regulated entities, from smaller investment firms and brokerages to larger financial services businesses that handle significant volumes of client assets. The firm’s CASS audit engagements examine systems and controls around TTCA, client asset segregation, reconciliations, daily reporting, and overall governance. All work is carried out by UK-based professionals who combine technical expertise with practical understanding of FCA client asset rules.
Acumon holds the necessary audit registration to deliver independent CASS assurance engagements. The firm helps regulated companies strengthen their collateral management processes, reduce regulatory risk, and maintain robust compliance frameworks in an evolving regulatory environment.
CASS Audit Capabilities:
Acumon provides specialist CASS audit services across different types of regulated businesses.
These include:
- CASS audits for firms holding client money and assets
- TTCA Arrangements reviews and assurance
- Client asset protection and segregation assessments
- Reconciliation and control testing
- Regulatory breach root cause analysis
- Support for firms with complex collateral structures
Regulatory Licences and Registrations:
Acumon holds several audit registrations that enable it to support organisations operating across multiple jurisdictions.
These include:
- UK statutory audit registration
- Public Interest Entity (PIE) audit licence
- Jersey audit licence
- Isle of Man audit licence
- Cayman Islands audit licence
- British Virgin Islands audit licence
These registrations allow the firm to provide audit services to groups that include entities in both the UK and key international financial centres.
Core Services:
In addition to statutory external audit, Acumon provides a range of services that support financial reporting and governance.
These include:
- statutory external audit
- group and subsidiary audits
- Public Interest Entity (PIE) audits
- charity and not-for-profit audit
- audit of international group structures
- internal audit and governance reviews
- risk management and compliance support
Audit work is often delivered alongside discussions with management and boards regarding financial reporting processes and governance frameworks.
Many organisations initially encounter statutory audit requirements as they grow and exceed the audit exemption thresholds set out in the Companies Act.
Acumon works with businesses that are:
- approaching their first statutory audit
- preparing for external investment
- expanding into international markets
- operating within corporate group structures
Early engagement with an audit firm can help ensure that financial reporting systems and documentation are aligned with statutory audit requirements.
Contact Information:
- Website: acumon.com
- Phone: 020 8567 3451
- Email: mail@acumon.com
- Address: 1-2 Craven Road, Ealing, London, W5 2UA, UK

Interactive Brokers
Interactive Brokers offers institutional and professional trading services from its UK base. The company provides custody and execution capabilities that include collateral handling under regulatory standards. It supports a wide range of global markets for its clients.
As part of its offering, the company enters into title transfer collateral arrangements with professional clients where appropriate. This forms part of broader financing and margin solutions. Companies like this deliver technology-driven platforms with robust controls for asset management. Their focus remains on execution quality and compliance with client asset rules. Clients use these services to support trading strategies while maintaining necessary protections.
Key Highlights:
- Global market access
- Advanced trading platforms
- Institutional solutions
- Custody services
- Regulatory compliance focus
Services:
- Securities financing
- Custody solutions
- Trade execution
- Collateral management
- Margin services
- Global clearing
Contact Information:
- Website: www.interactivebrokers.co.uk
- Address: 20 Fenchurch Street, Floor 12, London EC3M 3BY
- Facebook: www.facebook.com/InteractiveBrokersEurope
- Twitter: x.com/IBKR_Europe
- Instagram: www.instagram.com/interactivebrokers_europe

Jefferies
Jefferies delivers prime and custody services as part of its global operations with UK presence. The company supports institutional clients including hedge funds and asset managers. It provides solutions for execution and asset safeguarding.
The company incorporates title transfer collateral arrangements in its prime brokerage activities for professional clients. This helps facilitate financing and risk management. Companies like this bring experience in complex market structures. Their services cover a range of asset classes with focus on operational efficiency. Clients receive support tailored to regulatory compliance needs.
Key Highlights:
- Global prime services
- Custody solutions
- Institutional focus
- Execution capabilities
- Partnership approach
Services:
- Prime brokerage
- Custody services
- Trading and execution
- Financing solutions
- Collateral management
Contact Information:
- Website: www.jefferies.com
- Phone: +44 (0) 20 7548 4777
- Address: 13 Hanover Square, 4th Floor, London W1S 1HN, United Kingdom
- LinkedIn: www.linkedin.com/company/Jefferies
- Twitter: x.com/Jefferies
- Instagram: www.instagram.com/Jefferies

Buzzacott
Buzzacott provides accountancy and advisory services with a focus on financial services clients. The company supports businesses with regulatory compliance matters. It operates as a UK based practice serving various sectors.
The company offers assurance and advisory support relevant to client asset requirements for regulated entities. This includes guidance on CASS related processes where applicable. Companies in this space help with compliance oversight and controls. Their services address specific needs of financial services businesses. Professional clients use such expertise for regulatory alignment in asset handling matters.
Key Highlights:
- UK based practice
- Financial services focus
- Regulatory support
- Assurance services
- Compliance guidance
Services:
- Regulatory compliance
- Client asset reviews
- Assurance support
- Advisory services
- Control assessments
Contact Information:
- Website: www.buzzacott.co.uk
- Phone: +44 (0)20 7556 1200
- Email: enquiries@buzzacott.co.uk
- Address: 130 Wood Street, London, EC2V 6DL
- LinkedIn: www.linkedin.com/company/buzzacott
- Facebook: www.facebook.com/people/Buzzacott/100066357656648

Saffery
Saffery provides audit and assurance services to financial services businesses across the UK. The company supports regulated entities with compliance reviews under the Client Assets Sourcebook. It delivers CASS assurance engagements for firms handling client money and assets.
The company conducts reviews that cover title transfer collateral arrangements as part of broader CASS compliance work. This helps companies assess systems and controls for client asset protection. Companies in this space offer reasonable and limited assurance opinions depending on the firm’s permissions. Their approach includes practical guidance on regulatory requirements and breach management. Professional clients use these services to maintain alignment with FCA expectations in collateral handling.
Key Highlights:
- CASS assurance engagements
- Financial services sector focus
- Client asset reviews
- Regulatory compliance support
- Assurance opinions
Services:
- CASS audits
- Client money systems reviews
- Collateral arrangement assessments
- Internal controls reporting
- Regulatory guidance
Contact Information:
- Website: www.saffery.com
- Phone: +44 (0)113 887 5538
- Email: info@saffery.com
- Address: Saffery, 10 Wellington Place, Leeds, LS1 4AP
- LinkedIn: www.linkedin.com/company/saffery
- Instagram: www.instagram.com/saffery_uk

Linear Investments
Linear Investments specialises in prime brokerage and custody for professional clients in the alternative investment sector. The company has operated since 2010 and serves emerging managers and family offices. It combines execution with comprehensive support services.
It offers financing solutions such as margin and repo under title transfer collateral arrangements. Custody is arranged through tier one providers with adherence to CASS rules. Companies in this space deliver flexible prime services with client-focused attention. Their model emphasises transparency and regulatory compliance. Professional clients benefit from integrated global execution and asset protection measures.
Key Highlights:
- Prime brokerage specialist
- Custody through tier one providers
- Global execution
- Client-focused service
- Regulatory compliance
Services:
- Prime brokerage
- Global custody
- Execution services
- Liquidity management
- Collateral financing
- Securities lending
Contact Information:
- Website: linearinvestments.com
- Phone: +44 203 974 1928
- Address: 135 Park Street, London, SE1 9EA
- LinkedIn: www.linkedin.com/in/paulkelly5

Global Markets Group
Global Markets Group operates as an FCA authorised investment firm. The company provides trading access to financial markets through modern platforms for retail and professional clients. It maintains structured arrangements for client assets under regulatory requirements.
The company follows client money rules and the Client Assets Sourcebook in its operations. This includes specific processes for segregation and safeguarding of funds held with UK banks. Companies in this area support trading activities while addressing collateral needs for eligible professional clients through title transfer collateral arrangements. Their platform infrastructure supports efficient execution and daily market access. Professional clients use these services to manage positions with attention to compliance standards.
Key Highlights:
- FCA authorised investment firm
- Client funds segregation
- CASS compliance focus
- MT5 trading platform
- Professional client support
Services:
- Trade execution
- Market access
- Collateral arrangements
- Platform trading tools
- Client money safeguarding
- Reconciliation processes
Contact Information:
- Website: gmgmarkets.co.uk
- Phone: +44 203 865 3306
- Email: info@gmgmarkets.co.uk
- Address: 5 Beaconsfield Street, King’s Cross, London, N1C 4EW
- LinkedIn: www.linkedin.com/company/global-markets-group
- Facebook: www.facebook.com/GMGMarkets

Global Investment Strategy
Global Investment Strategy operates as an FCA regulated prime broker in the City of London. The company delivers clearing, safe custody, and execution services to financial institutions, fund managers, and professional clients. It maintains arrangements that support collateral management within the regulatory framework.
The company emphasises transparent client relationships and strong governance in its operations. It handles title transfer collateral arrangements as part of its prime brokerage offering for professional clients. This allows efficient use of assets while addressing compliance requirements. Companies like this provide dedicated support for global markets and focus on practical solutions for collateral needs. Their approach integrates regulatory standards into daily client service. Many professional clients use such structures to manage obligations effectively across different asset classes.
Key Highlights:
- FCA regulated prime broker
- Safe custody solutions
- Clearing services
- Professional client focus
- Strong governance culture
Services:
- Clearing and settlement
- Safe custody
- Trade execution
- Collateral management
- Prime brokerage support
Contact Information:
- Website: www.gisukltd.com
- Phone: +44 (0)20 7048 9400
- Email: info@gisukltd.com
- Address: 200 Aldersgate Street, London, EC1A 4HD
- LinkedIn: www.linkedin.com/company/global-investment-strategy-uk-ltd
- Twitter: x.com/GISUKLtd

Trade Capital UK
Trade Capital UK provides trading and investment services under FCA regulation. The company supports professional clients with access to financial markets and maintains specific arrangements for collateral. It operates through established platforms that facilitate efficient trade execution and asset handling.
The company has dedicated terms for title transfer collateral arrangements to support client obligations in trading activities. This setup helps manage margin and financing needs while following regulatory guidelines. Companies in this area offer secure access and focus on client requirements for collateral. Their infrastructure supports a range of instruments and ensures proper documentation of arrangements. Professional clients benefit from clear processes around asset use and returns.
Key Highlights:
- FCA authorised investment firm
- Global market access
- Platform-based trading
- Segregated fund protection
- Professional client services
Services:
- Trade execution
- Margin financing support
- Collateral arrangements
- Market access
- Client relationship management
Contact Information:
- Website: www.tradecapitaluk.com
- Phone: +44 (0)20 31 50 23 85
- Email: info@tradecapitaluk.com
- Address: 25 Wilton Road, Victoria London, SW1V 1LW

GBM Securities
GBM Securities operates as an FCA regulated prime broker. The company provides market access and execution services to institutional investors and professional clients. It supports financing solutions and collateral structures in its operations.
The company includes collateral management as part of its prime brokerage activities for eligible professional counterparties. This forms part of broader financing arrangements under regulatory oversight. Companies in this space deliver execution services across multiple instruments and markets. Their approach combines technology with client coverage for daily operations. Professional clients use such services to manage liquidity and obligations through title transfer collateral arrangements where appropriate.
Key Highlights:
- FCA regulated prime broker
- Institutional market access
- Financing solutions
- Technology platforms
- Collateral management
Services:
- Trade execution
- Market access
- Collateral management
- Prime brokerage
- Financing arrangements
- Custody support
Contact Information:
- Website: gbmsecurities.com
- Phone: +44 20 7065 2016
- Email: info@gbmsecurities.com
- Address: 99 Bishopsgate, 17th Floor, London, EC2M 3XD
- LinkedIn: www.linkedin.com/company/gbm-securities

Zodiac Partners Ltd
Zodiac Partners Ltd operates as an FCA regulated investment firm. The company provides wealth management and brokerage services focused on professional clients. It supports trading in financial instruments through established platforms.
The company maintains client asset arrangements in line with regulatory requirements for eligible professional investors. This includes processes for derivatives and related positions. Companies in this segment deliver full service brokerage with attention to compliance standards. Their operations cover portfolio management and execution needs. Professional clients access these services without retail offerings in certain high risk products.
Key Highlights:
- FCA regulated firm
- Professional client focus
- Wealth management
- Brokerage services
- Derivatives support
Services:
- Trade execution
- Portfolio management
- Collateral arrangements
- Market access
- Client asset safeguarding
Contact Information:
- Website: www.zodiacpartners.co.uk
- Phone: +44 (0)208 396 6890
- Email: info@zodiacpartners.co.uk
- Address: 5th floor 1 Lloyds Avenue, London, EC3M 5JD
- LinkedIn: www.linkedin.com/company/zodiacpartnerslimited
- Instagram: www.instagram.com/zodiac.partners

Grant Thornton
Grant Thornton delivers assurance and advisory services through multiple offices across the country. The company supports regulated financial businesses with compliance and risk related matters. It provides expertise relevant to client asset requirements.
The company assists with CASS related assurance for firms subject to FCA rules on client money and assets. This includes support for structures such as title transfer collateral arrangements. Companies in this area help with controls assessment and regulatory alignment. Their regional presence allows access for businesses outside London. Professional clients turn to such practices for independent oversight in asset protection processes.
Key Highlights:
- Multi office UK presence
- Assurance services
- Regulated client support
- Risk and controls focus
- Financial services expertise
Services:
- Assurance engagements
- CASS related reviews
- Compliance support
- Risk management advice
- Client asset guidance
Contact Information:
- Website: www.grantthornton.co.uk
- Phone: +44 (0)113 245 5514
- Email: dan.j.dickinson@uk.gt.com
- Address: 7th Floor, City Square House, 11 Wellington Street, Leeds LS1 4DL
- LinkedIn: www.linkedin.com/company/grant-thornton-uk
- Instagram: www.instagram.com/gt_trainees

PKF Littlejohn
PKF Littlejohn offers audit and assurance services from offices in London, Leeds and Manchester. The company works with financial services clients including investment firms. It provides specialist input on client asset compliance.
The company supports preparation and delivery of CASS audits with focus on rules such as CASS 6 and 7. This covers areas relevant to title transfer collateral arrangements. Companies in this segment deliver practical recommendations for audit readiness and breach remediation. Their team handles complex regulated environments. Professional clients benefit from targeted support in maintaining effective controls.
Key Highlights:
- Specialist financial services team
- CASS audit expertise
- Regional office network
- Investment firm support
- Compliance focus
Services:
- CASS audits
- Client asset reviews
- Audit preparation support
- Controls assessment
- Regulatory compliance
Contact Information:
- Website: www.pkf-l.com
- Phone: +44 (0)161 552 4220
- Email: info@pkf-l.com
- Address: 11 York Street, Manchester M2 2AW
- LinkedIn: www.linkedin.com/company/littlejohn
- Twitter: x.com/PKF_Littlejohn
- Instagram: www.instagram.com/pkf.littlejohn

Bishop Fleming
Bishop Fleming provides audit and advisory services with a strong presence in the South West and other UK locations. The company supports FCA regulated businesses with compliance matters. It delivers assurance work tailored to financial services needs.
The company includes CASS related reviews in its audit and regulatory support offering. This encompasses guidance on client asset arrangements including TTCA where relevant. Companies in this space combine local knowledge with specialist regulatory understanding. Their approach helps businesses address year round compliance requirements. Professional clients access these services for practical assurance on asset safeguarding processes.
Key Highlights:
- Regional UK focus
- Regulated business support
- Audit and assurance
- FCA compliance expertise
- Client asset guidance
Services:
- CASS reviews
- Audit services
- Regulatory compliance
- Controls assessment
- Assurance engagements
Contact Information:
- Website: www.bishopfleming.co.uk
- Phone: 0117 9100250
- Address: 10 Temple Back, Bristol, BS1 6FL
- LinkedIn: www.linkedin.com/company/bishop-fleming-chartered-accountants
- Facebook: www.facebook.com/people/Life-at-Bishop-Fleming/100093464198343
- Twitter: x.com/BishopFlemingUK
- Instagram: www.instagram.com/bishopfleminguk
Conclusion
Choosing the right support for TTCA Arrangements depends on several factors, including the size of the business, the specific sector, the maturity of existing processes, and individual regulatory requirements. Some companies take a broad, integrated approach that combines multiple services, while others focus more narrowly on specialist CASS and collateral work.
The right partner delivers independent assurance and practical steps to reduce risks and support resilience. This guide has provided a neutral overview of how different companies operate in this area and what they typically offer. Ultimately the decision comes down to finding the approach that fits the unique needs of each organisation.
Readers can use this information as a starting point to compare options and hold more informed conversations when selecting support.