Executive Board

Oliver Cooke


Oliver has over 30 years of financial and business development experience gained in a range of quoted and private companies including over ten years’ experience as a Public Company Director. He has considerable experience in the fields of acquisitions, disposals, fundraisings, turnarounds, restructurings and strategic transformation. Oliver is a Chartered Accountant and Fellow of the Association of Chartered Certified Accountants.

Brian Raven

Chief Executive

Brian was Chairman of Blacksquare and has been involved in the financial services sector since 2010. He has a wide range of business experience, having held many sales and general management posts at senior management and board level, including running public companies on both AIM and the Official List. Most notably, in 1991 Brian founded Card Clear Plc, subsequently renamed Retail Decisions plc, a business engaged in combating the fraudulent use of plastic payment cards. He led the company until 1998 by which time it was an international group, listed on AIM, with a market capitalisation of some £100 million. As a principal, Brian has been responsible for identifying, negotiating and integrating numerous acquisitions, as well as for delivering organic growth.

Mark Wilson

Chief Operating Officer

Mark has over 21 years’ experience in financial services in leadership roles including Managing Director, Chief Operating Officer, Head of M&A and risk management. Mark has group wide responsibility for HR, financial planning, compliance, risk management, operations (facilities, procurement and support), change management and technology. Mark has previously been a Partner at RSM UK (Baker Tilly) for over 10 years and completed senior consultancy roles at AA Insurance, Interactive Investor and M&G Prudential, amongst others.

Ben Raven

Managing Director
Tavistock Asset Management 

Ben has 13+ years’ experience in financial services having held senior management positions at both Asset Management and Wealth Management organisations. Ben joined the business that became Tavistock Wealth (Blacksquare) in the summer of 2007. During this time he was a Director and Head of Research. Responsibilities within Tavistock have included Group business development, providing support to all Group advisers and conducting due diligence on a number of acquisitions. He holds a B.A in Business Management from Leeds University Business School.

Malcolm Harper

Managing Director Tavistock Partners & The Tavistock Partnership

Malcolm is Managing Director for both the Registered Individual (Tavistock Partners) and Appointed Representative (Tavistock Partnership) businesses within Tavistock. Having been in the industry for 29 years, he founded Abacus Associates in 2003, which he developed into one of the country’s leading Independent Financial Advisory firms. Under Malcolm’s management, Abacus grew to an adviser force of 44 and assets under management of approximately £650m prior to joining the Tavistock Group in 2016.

Mark Evans

Managing Director
Tavistock Private Client

Mark joined Tavistock PLC having worked within financial services since 1987. In 1996, he formed his own IFA brokerage in several locations  and since has successfully generated leads and business opportunities for his advisers. This culminated in MBO’s and Mark then moved to work in the private client sector. As well as running his own successful brokerage, Mark has excellent experience of working with the expat community and set up and ran a successful brokerage in Portugal. In 2012, he was recruited into Lighthouse Group as their first Business Development Executive. Mark recruited and mentored many new advisers and was promoted to Business Development Director. Six months later he was promoted to Managing Director of Lighthouse Financial Advice where he consolidated the separate divisions into one and helped increased the advisers’ earnings substantially.

Chris Halford

Group Marketing Director

Chris has over 30 years’ experience in the marketing and creative arena. His work with 3M UK Plc included marketing Scotch Tape and Post-it notes, and was instrumental in establishing a joint venture with the BBC that launched BBC Video in the early 80’s. Chris was then European Head of Operations with Embassy Pictures, before leaving to set up his own Design Business, initially focused on the music and film industries. Clients included Warner Brothers, Virgin, CBS Fox, Polydor, BSkyB, Philips, Samsung, Sony and VW. Chris is the architect of Tavistock Investments’ entire brand strategy and he oversees the marketing activity of all Group businesses.

Johanna Rager

Group Financial Officer

Johanna is an accomplished Finance Director with 20+ years of professional achievement in Multinational companies. She has a track record of delivering strategic, commercial and operational solutions across global organisations, including the implementation of complex Mergers and Acquisitions. Johanna has proven ability to deliver top and bottom lines and adapt to ever-changing business environments while focusing on talent development and lean processes. She holds a Masters’ degree in Economics and Business Administration from The University of Economics and Business Administration in Vienna.

Greg Preston

Group Compliance Director

Gregor joined the Tavistock Investments Group via our first acquisition in 2014. During his career he has held compliance roles in both Advisory and Wealth Management businesses with particular focus on the establishment and on-going compliance controls of our Investment Management products and services, whilst providing compliance oversight to all regulated group entities.

Steven McGregor

Business Development Director
Tavistock Asset Management

Steve is the Business Development Director for Tavistock Asset Management. Steve has over 20 years’ experience in financial services and spent over a decade at Barclays Wealth managing private client portfolios, before becoming Investment Director for PB Financial Planning (PBFP) in 2010.  He joined the Group in 2016 with the acquisition of PBFP, serving as an Investment Consultant and Head of Adviser Support. Steve holds an MA in International Political Economy from the University of Leeds, as well as Chartered Wealth Manager status with the CISI where he is also a Chartered Fellow.

Amy Chidgey

Group Financial Controller

Amy is a Chartered Accountant and gained a first-class degree in Economics from Exeter University. Having qualified in public practice working in statutory audit, she joined Tavistock in 2017 and in 2022 was invited to become a member of the Group’s Executive Board. Amy leads the team who are responsible for the financial operation of the Group and for providing additional support to individual business heads within the Group. She also engages in a wide range of strategic modelling and other projects in support of the Group’s Executive Directors.

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Tavistock Investments Plc, Registered in England and Wales. Registered Office: 1 Queen’s Square, Ascot Business Park, Lyndhurst Road, Ascot, Berkshire, SL5 9FE., Company Number 05066489.