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About Us

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Our history

Created to guide and empower our clients, our mission is to create positive change.

WTT Group offers tax, legal and advisory services to all parties within the contractor supply chain. Leaning on our investigations background, we help to create the agile workforce needed to power today’s world.

Our vision for the future is for the contracting industry to be transparent and fair to all.

Our Leadership Team

Rhys Thomas, Managing Director

Rhys’ professional background began in the legal industry working on international contractual agreements and dispute resolution. Following this Rhys moved into the financial sector utilising his legal knowledge to perform alternative dispute resolution for the financial services industry.

Rhys now manages the WTT Group of companies and oversees the continued development and expansion of the organisation.

Outside of work Rhys enjoys training for and entering triathlon races around Europe.

Rhys Thomas

Managing Director

Graham Webber, Director of Tax

Following nearly 4 decades working in various tax disciplines Graham co-founded WTT to offer his deep experience and understanding of complex tax structures to those embroiled in tax enquiries.

Graham’s career in tax began in 1976 when he joined HM Revenue and Customs. This was followed by stints in private practice specialising in niche areas before moving to Barclays Group Tax in 1987 and securing his membership of the Chartered Institute of Taxation. In the 12 years there, he dealt with a range of issues from Gilts trading to sovereign debt provisioning to Executive remuneration. He also worked for a period in the leasing business which led to him joining the big-ticket leasing division of Royal Bank of Scotland in 2000. In 7 years there and post the leasing business being reorganized, he worked on devising products for the bank’s FTSE listed clients.

In 2007, a move to Future Capital Partners saw Graham returning to private practice. As part of a diverse portfolio of work, he structured a number of funds one of which focussed on renewable fuel.

Now, Graham focusses on developing robust and extensive tax policy for WTT and is regularly ask to comment for press and most recently the treasury select committee during an inquiry on HMRC’s powers and the Finance Bill.

Outside of work Graham is a keen cyclist and regularly competes in long distance races.

Graham Webber

Director of Tax

Carla Roberts, Director of Legal Services

Carla is the Director of Legal Services at WTT Legal Ltd. Carla is a dual qualified lawyer (US/UK) and has extensive experience in employment law, IR35 advice, commercial contracts, data protection and insurance law issues. Prior to joining WTT, Carla was Senior Legal Counsel at Alexander Mann Solutions Ltd, Head of Legal at Gattaca PLC and Compliance Manager at Capita Group PLC.

In her role at WTT, Carla is committed to providing top quality legal advice, ensuring that our clients have access to a “one-stop shop” for all their legal needs, including employment, contracts, wills, estate and tax planning and insurance.

Outside of work, Carla enjoys visiting her family in California and enjoying the peace and tranquillity in Mammoth Lakes in the High Sierra mountains.

Carla Roberts

Director of Legal Services

Thomas Wallace, Director of Tax Investigations

In 1999 Tom joined the Inland Revenue, which later merged to form HM Revenue & Customs. After a number of years in tax advisory and management roles Tom successfully applied for Inspector Training and qualified in 2006 following an 18-month training period. From there he spent tours of duty as an investigator in all the customer segments dealing with the tax affairs of local businesses right up to worldwide groups which are household names. Following promotion in 2013 to Senior Officer, Tom spent 4 years in management roles providing strategic and technical leadership to teams of investigators before returning to the front line as an investigator looking at Complex Evasion. In July 2017 Tom left the civil service to become WTT’s first Head of Tax.

In his role Tom uses his extensive specialism with HMRC process and tax disputes to develop strategy and resolution solutions which are then implemented company wide, whilst also being the senior manager for the entire Tax Team.

Outside of work Tom can usually be found watching sports or in the gym, where he has a keen interest in boxing.

Thomas Wallace

Director of Tax Investigations

Lisa Saliba, Head of Client Services

In September 1997 Lisa joined Martin Cordell & Co Accountants as an Office Junior. After spending a number of years in this role, Lisa was promoted to Tax Assistant where she gained 17 years of experience and knowledge in personal tax. Her role was to provide assistance and tax advice to the 1500 clients that she was responsible for and to complete and submit their Self-Assessment Tax Returns to HMRC. In 2017 Lisa left Martin Cordell & Co to become WTT’s Head of Client Services.

Lisa’s role as Head of client services is to manage the client services team and to provide them with her expertise and experience to ensure that clients receive a high quality of customer service.

In her own time Lisa enjoys socialising with friends and spending time with her family.

Lisa Saliba

Head of Client Services

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The WTT way

Open. Honest. With integrity.

Our deep technical knowledge is the foundation on which we’re built. Committed to remain agile and responsive, our team treats each client as if they were the only one.

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Working with us

Looking for your next career move?

We offer our team members autonomy within each role while equally encouraging teamwork throughout.

Are you a tax, legal or accounting expert? Or do you have experience in client services? We’d love to hear from you.

What are you waiting for? Contact us today.

Get in touch today
Portrait of a cheerful man using laptop at home.

I’ve been with WTT for nearly four years now and it’s as good as it was the day I joined! The open door policy has been brilliant for learning about new areas, and understanding the business. They’ve supported me through lockdown and invested in me and my future and I couldn’t be happier.

Arrange a callback

We’d love to hear from you!
Whether you simply have a quick question, or were seeking a more formal conversation to discuss your tax needs, drop your details here and we will be in touch! Alternatively, you can contact us on +44 (0)20 3468 0000.