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M&A Advisory Services Companies in London: A Practical Overview and Selection Guide

This guide serves as a straightforward resource for anyone navigating M&A advisory services in London. It focuses on the landscape of companies offering these services, without ranking or declaring any as superior. London hosts a diverse mix-from those handling large-scale, cross-border deals with broad resources to more specialised players focused on mid-market or sector-specific transactions. The companies vary in their approach: some emphasise integrated support across the full deal lifecycle, while others concentrate on targeted elements like due diligence or valuations. The aim here is simple-to outline who these companies are, the types of clients and deals they typically serve, and the strengths they bring-so you can better evaluate what might fit your situation and move forward with clearer perspective.

Acumon

Acumon is a chartered accountancy company based in London. All its professionals work from the UK. It serves businesses across the UK and some international clients. The company provides specialist advisory services in mergers and acquisitions. It supports buying or selling businesses, management buy-outs, buy-ins, succession planning, valuations, and due diligence.

Its advisory services align with UK market needs and business priorities. They address regulatory aspects in transactions. The approach focuses on practical risk assessment during deals. It helps companies handle ownership changes in a regulated UK environment.

The service identifies weaknesses in targets or deal structures early. It strengthens relevant internal controls for transactions. It builds confidence in financial and commercial information. It includes technology risks when appropriate. The focus stays on actionable steps to reduce uncertainty and support resilience.

Key Highlights:

  • UK-based team with real M&A experience
  • Services delivered from London office
  • Focus on mid-market and smaller deals
  • Expertise in buy-side and vendor due diligence
  • Support for succession and management transitions
  • Emphasis on financial and commercial risk identification
  • Practical post-transaction integration advice

Services:

  • M&A advisory services in London
  • Buying a business
  • Selling your business
  • MBO & MBI
  • Succession planning
  • Valuations
  • Due diligence (financial, tax, commercial)

Contact Information:

Houlihan Lokey

Houlihan Lokey provides mergers, acquisitions, and divestitures advisory services. It covers a broad range of clients through dedicated industry groups. The company has an office in the United Kingdom. It handles buyside and sellside transactions across various sectors.

Its work includes leveraged transactions and support for financial sponsors. The approach draws on global industry coverage. It aligns with different client needs in public and private deals. The company focuses on mergers, acquisitions, and divestitures. It serves clients in business services, consumer, energy, financial services, healthcare, industrials, technology, and more. Practical execution stays tied to industry-specific knowledge.

Key Highlights:

  • Global industry coverage model
  • Buyside and sellside expertise
  • UK office presence
  • Financial sponsors support
  • Leveraged transaction focus

Services:

  • Mergers
  • Acquisitions
  • Divestitures

Contact Information:

  • Website: hl.com
  • Phone: +44 20 7839 3355
  • Address: One Curzon Street, London, W1J 5HD, United Kingdom
  • LinkedIn: www.linkedin.com/company/houlihan-lokey

Rothschild & Co

Rothschild & Co offers independent M&A and strategic advisory. It operates with teams across many countries. The company handles every type of deal party. It covers public and private equity transactions. Mid-market work includes dedicated teams like Arrowpoint Advisory in the UK.

Its services range from large high-profile deals to complex mid-market ones. The approach tailors processes to client objectives. It involves understanding needs deeply. Long-term relationships guide the work. It covers public mergers, takeovers, demergers, joint ventures, and privatisations. The focus stays on bespoke strategic assignments too.

Key Highlights:

  • Independent M&A advice
  • Teams across multiple countries
  • Mid-market transaction teams in UK
  • Sector specialist coverage
  • Tailored transaction structures
  • Long-term client relationships

Services:

  • Public mergers and takeovers
  • Defence preparation and bid defences
  • Demergers and spin-offs
  • Business disposals and acquisitions
  • Joint ventures and strategic alliances
  • Privatisations
  • Shareholder reorganisation

Contact Information:

  • Website: www.rothschildandco.com
  • Phone: +44 20 7484 4700
  • Address: 15 Adam Street, London WC2N 6RJ, United Kingdom
  • LinkedIn: www.linkedin.com/company/rothschildandco
  • Instagram: www.instagram.com/rothschildandco

AlixPartners

AlixPartners delivers M&A consulting and advisory with a focus on value creation. It works with companies and investors across industries. The company has experts in London for EMEA private equity and transaction advisory. It covers the full deal lifecycle from due diligence to integration.

Its services emphasise action-oriented speed. Outside-in due diligence uses AI for quick insights. Commercial and technology assessments highlight opportunities and pitfalls. Carve-outs and divestitures get detailed guidance. Integration addresses antitrust, continuity, and synergies. The approach prioritises fact-based clarity and operating improvements.

Key Highlights:

  • Global M&A experts
  • London-based EMEA leadership
  • AI-enabled due diligence
  • Full deal lifecycle support
  • Focus on value creation
  • Action bias for quick results

Services:

  • Outside-in due diligence
  • Commercial & operations due diligence
  • Technology due diligence
  • Carve-outs & divestitures
  • Integration
  • Corporate finance & capital advisory

Contact Information:

  • Website: www.alixpartners.com
  • Phone: +44 20 7098 7400
  • Email: mveldon@alixpartners.com
  • Address: 6 New Street Square, London, EC4A 3BF, United Kingdom
  • LinkedIn: www.linkedin.com/company/alixpartners
  • Instagram: www.instagram.com/alixpartnersllp

Deloitte UK

Deloitte UK supports clients with M&A advisory in the UK market. It helps execute acquisitions, disposals, and external funding raises. The team works with large corporates and owner-managed businesses. It draws on a network of financial advisory professionals.

Its advisory covers transaction execution from start to finish. The focus stays on successful deal outcomes. It addresses client needs in acquisitions and disposals. External funding options get practical support. The approach remains grounded in UK business contexts. Sector and product specialists contribute to the work.

Key Highlights:

  • UK-focused M&A advisory
  • Support for large corporates
  • Owner-managed business clients
  • Sector and product specialists
  • Network of advisory professionals

Services:

  • Acquisitions
  • Disposals
  • Raising external funding
  • Transaction execution support

Contact Information:

  • Website: www.deloitte.com 
  • Phone: +44 (0)20 7936 3000
  • Address: 1 New Street Square, London, EC4A 3HQ, United Kingdom
  • LinkedIn: www.linkedin.com/company/deloitte
  • Facebook: www.facebook.com/deloitteuk
  • Twitter: x.com/deloitteuk
  • Instagram: www.instagram.com/deloitte_uk

EY

EY provides buy-side M&A advisory in the UK. It helps with strategy refinement, deal sourcing, and identifying targets or partners. The company covers due diligence across commercial, financial, and operational areas. It also supports valuation, modeling, and post-deal integration.

Services include joint ventures and alliances alongside acquisitions. The approach combines sector knowledge with technology tools like AI and data analysis. It focuses on practical steps from origination through to value creation after closing. Integration work covers Day One readiness, synergy capture, and change management. Multidisciplinary teams handle the process. The emphasis remains on informed decisions and smoother transitions.

Key Highlights:

  • Buy-side focus
  • Deal sourcing and origination
  • Comprehensive due diligence
  • Valuation and modeling
  • Post-deal integration support
  • Technology in M&A processes

Services:

  • M&A diligence and valuation
  • M&A integration
  • Deal sourcing and origination
  • Growth strategy
  • Joint ventures and alliances
  • Cybersecurity due diligence
  • ESG strategy in M&A

Contact Information:

  • Website: www.ey.com
  • Phone: +44 20 7951 2000
  • Address: 1 More London Place, London SE1 2AF
  • LinkedIn: www.linkedin.com/company/ernstandyoung
  • Facebook: www.facebook.com/pages/Ernst-Young/195665063800329
  • Twitter: x.com/EYnews

Investec Advisory

Investec Advisory handles M&A and corporate finance advisory. It covers sell-side for business sales and buy-side for acquisitions. The company works on mergers, buyouts, divestments, and growth capital deals. It operates across the UK and Europe with broader international reach.

Its transaction advisory includes strategic advice for various deal types. The work spans private equity sell-side to special situations. It addresses client needs in divestments and carve-outs. The approach stays practical for mid-market contexts in the UK. Debt advisory ties in where relevant to deals. Focus remains on execution and strategic fit.

Key Highlights:

  • Sell-side and buy-side advisory
  • UK and Europe coverage
  • Buyout and LBO support
  • Divestment and carve-out expertise
  • Growth and equity capital advisory

Services:

  • Sell-side advisory
  • Buy-side advisory
  • Mergers and acquisitions
  • Buyout/LBO
  • Divestment/carve-out
  • Growth/equity capital
  • Special situations

Contact Information:

  • Website: www.investec.com 
  • Phone: +44 (0)20 7597 4000
  • Email: online.queries@investec.co.uk
  • Address: 30 Gresham Street, EC2V 7QP, London, United Kingdom
  • LinkedIn: www.linkedin.com/company/investec
  • Facebook: www.facebook.com/InvestecBank
  • Twitter: x.com/Investec
  • Instagram: www.instagram.com/investec

MCF Corporate Finance

MCF Corporate Finance offers boutique M&A advisory with a London office. It guides clients through company succession and strategic deals. The company supports private and public businesses in transitions. Services include buy-side and sell-side advisory plus cross-border work.

Its approach develops custom strategies based on client goals. It covers add-on acquisitions and growth capital. The focus stays on seamless execution for ownership changes. Private equity sell-side gets dedicated support. Corporate spin-offs form part of the offerings. Practical advice aims at clear outcomes in UK markets.

Key Highlights:

  • London boutique office
  • Buy-side and sell-side advisory
  • Cross-border transaction support
  • Private and public company focus
  • Strategic M&A guidance

Services:

  • Company succession
  • Corporate spin-offs
  • Strategic M&A advisory
  • Growth capital
  • Private equity sell-side
  • Buy-side advisory
  • Add-on acquisitions

Contact Information:

  • Website: www.mcfcorpfin.com
  • Phone: +44 20 7968 2760
  • Email: london@mcfcorpfin.com
  • Address: 14 Waterloo Place, London SW1Y 4AR, United Kingdom
  • LinkedIn: www.linkedin.com/company/mcf-corporate-finance

Cavendish Corporate Finance

Cavendish offers M&A advisory for private and public companies in the UK. It covers buy-side and sell-side services with a London presence. The company supports ambitious businesses across industry sectors. It handles mid-market transactions through its private M&A team.

Its private M&A work includes company sales and acquisitions. The approach emphasises strategic fit and value realisation. It guides clients on perfect acquisition matches or maximising business value. Services extend to public takeover activity where relevant. The focus stays on practical execution for UK-based deals. Membership in Oaklins provides cross-border connections.

Key Highlights:

  • Private M&A expertise
  • Buy-side advisory
  • Sell-side advisory
  • London office base
  • Mid-market company focus
  • UK public takeover support

Services:

  • Private M&A advisory
  • Buy-side advisory
  • Sell-side advisory
  • Public M&A advisory
  • Company sales
  • Acquisitions advisory

Contact Information:

  • Website: www.cavendish.com
  • Phone: 44 (0) 20 7908 6000
  • Email: contact@cavendish.com
  • Address: 1 Bartholomew Close, London, EC1A 7BL
  • LinkedIn: www.linkedin.com/company/cavendishfinancialplc
  • Twitter: x.com/Cavendish_plc
  • Instagram: www.instagram.com/cavendishfinancial

Thomas Scott & Co

Thomas Scott & Co operates as an independent M&A boutique in London. It specialises in sell-side advisory for business owners. The company works with UK clients on sales across various sectors. It maintains a database for matching with potential acquirers.

Its sell-side service guides the entire process from preparation to completion. The approach emphasises business valuations and targeted outreach. It handles deals in a straightforward manner. The focus remains on achieving suitable exits. Independent perspective shapes the advisory. Practical steps support owners through transactions.

Key Highlights:

  • Independent London boutique
  • Sell-side M&A specialisation
  • UK business focus
  • Sector-diverse experience
  • Acquirer database utilisation

Services:

  • Sell-side M&A advisory
  • Business sales support
  • Valuation for exits
  • Targeted acquirer matching

Contact Information:

  • Website: thomas-scott.co.uk
  • Phone: +44 (0)20 8050 2728
  • Email: info@thomas-scott.co.uk
  • Address: Fergusson House, 128 City Road, London, EC1V 2NX
  • LinkedIn: www.linkedin.com/company/thomas-scott-co
  • Facebook: www.facebook.com/thomas.scott.co

Clairfield International

Clairfield International provides M&A advisory services for middle market transactions. It covers mergers, acquisitions, sales, and buy-side advisory. The company works with emerging growth companies across sectors like business services, consumer, healthcare, industrials, and technology. It handles founder exits, corporate carveouts, and cross-border deals.

Its advisory includes transactions involving local champions in various markets. The approach stays practical for mid-market companies. It draws on sector-specific knowledge for deals. UK involvement appears through transactions with UK-based businesses. The focus remains on guiding clients through sales and acquisitions in a straightforward way.

Key Highlights:

  • Mid-market transaction focus
  • Cross-border acquisition support
  • Founder exit advisory
  • Corporate carveout expertise
  • Sector-diverse coverage

Services:

  • Mergers
  • Acquisitions
  • Sales advisory
  • Buy-side advisory
  • Founder exits
  • Corporate carveouts
  • Cross-border deals

Contact Information:

  • Website: www.clairfield.com
  • Email: mail@clairfield.com
  • Phone: +44 121 234 6070
  • Address: Floor 23, The Broadgate Tower, 20 Primrose Street, EC2A 2EW, London
  • LinkedIn: www.linkedin.com/company/clairfieldinternational

ONEtoONE Corporate Finance

ONEtoONE Corporate Finance offers M&A advisory with a focus on sell-side and buy-side services. It includes mergers advisory and business valuation for deals. The company supports private placements tied to acquisitions or growth. It operates across multiple locations worldwide.

Its work covers company sales, acquisitions, and mergers for SME deals. The approach emphasises valuation as part of the process. It guides clients through sell-side and buy-side transactions. Practical execution applies to various financing needs in M&A contexts. The services stay connected to ownership changes and strategic moves.

Key Highlights:

  • Sell-side advisory specialisation
  • Buy-side support
  • Mergers advisory
  • Business valuation for deals
  • Private placement integration

Services:

  • Sell-side advisory
  • Buy-side advisory
  • Mergers advisory
  • Business valuation
  • Private placement advisory

Contact Information:

  • Website: www.onetoonecf.com
  • Phone: +34 911 83 48 58
  • Email: info.gb@onetoonecf.com
  • Address: Tower 42, 25 Old Broad Street, London, United Kingdom
  • LinkedIn: www.linkedin.com/company/onetoone-corporate-finance
  • Facebook: www.facebook.com/onetooneglobal

M&A Advisory

M&A Advisory specialises in company sales, mergers, and acquisitions in the UK. It focuses on sell-side processes for business owners. The company guides clients on timing, partner selection, and value maximisation. It operates with a UK emphasis, including international reach.

Its advisory covers the full sell-side journey in a direct manner. The approach helps identify the right path for shareholder value. It stays grounded in UK market realities. Practical steps address finding optimum partners. The service prioritises clear outcomes for exits.

Key Highlights:

  • UK-focused M&A
  • Sell-side specialisation
  • Timing and partner advice
  • Value maximisation focus
  • London contact presence

Services:

  • Company sales advisory
  • Mergers advisory
  • Acquisitions advisory
  • Sell-side process guidance

Contact Information:

  • Website: www.mandaadvisory.com
  • Phone: (+44) 207 6809849
  • Email: davidb@mandaadvisory.com
  • Address: 2-4 Sampson Street, London, E1W 1NA
  • LinkedIn: www.linkedin.com/company/m&a-advisory
  • Twitter: x.com/MandAAdvisory

GP Bullhound

GP Bullhound focuses on technology sector M&A advisory from its London base. It provides advisory services for mergers and acquisitions in tech and digital businesses. The company works with clients in growth-oriented technology companies. It handles transactions in areas like software, internet, and related digital sectors.

Its advisory supports deals where technology drives value. The approach stays practical for tech-specific market dynamics. It covers sell-side and buy-side processes in tech contexts. London operations anchor the European work. The focus remains on guiding tech companies through strategic transactions and ownership changes.

Key Highlights:

  • Tech sector specialisation
  • London office base
  • Digital business focus
  • Growth company advisory
  • M&A in software/internet

Services:

  • Technology M&A advisory
  • Mergers advisory
  • Acquisitions advisory

Contact Information:

  • Website: www.gpbullhound.com
  • Phone: +44 0207 101 7580
  • Email: hello.london@gpbullhound.com
  • Address: 78 ST JAMES’S STREET, LONDON SW1A 1JB, UNITED KINGDOM

Goldman Sachs

Goldman Sachs provides investment banking advisory on mergers and acquisitions. It covers strategic transactions for corporations pursuing growth or restructuring. The company offers advice on cross-border deals using its global network. It also handles structured transactions like joint ventures, spin-offs, and recapitalizations.

Its services include activism defense and raid preparedness for vulnerability to unsolicited approaches. Financial sponsors receive guidance on leveraged buyouts, stake purchases, and asset monetizations. The approach draws on industry knowledge and integrated teams for deal execution. Cross-border work connects different jurisdictions. Practical focus stays on evaluating alternatives and designing complex structures. London serves as a major European hub for these operations.

Key Highlights:

  • Strategic M&A advisory
  • Cross-border transaction support
  • Activism and raid defense
  • Structured deal design
  • Financial sponsors advisory
  • Global network utilisation

Services:

  • Strategic M&A
  • Activism and raid defense
  • Cross-border M&A
  • Structured M&A
  • Financial sponsors advisory

Contact Information:

  • Website: www.goldmansachs.com
  • Phone: (020) 7774 1000
  • Address: Plumtree Court, 25 Shoe Lane, London EC4A 4AU
  • LinkedIn: www.linkedin.com/company/goldman-sachs
  • Twitter: x.com/goldmansachs
  • Instagram: www.instagram.com/goldmansachs

Conclusion

The choice of an M&A advisory company in London ultimately comes down to factors like your business size, industry sector, the maturity of your internal processes, and any specific regulatory considerations involved in the deal. Some companies provide a more integrated approach that covers multiple stages of a transaction, while others maintain a narrower, deeper focus on particular aspects such as due diligence or valuations. This guide has aimed to offer a neutral, factual context to help you compare the options available. In the end, the right partner delivers independent assurance and practical steps to reduce risks and support resilience.