Oxford Office - 01865 552 925  |  Witney Office - 01993 776 476 team@themgroup.co.uk

About The MGroup

You may be wondering where The MGroup got its name? We were formerly Miell and Company based in Oxford and we were established in 1928. Over the years we have helped thousands of businesses, including many of the most successful, to thrive in Oxfordshire and beyond. In 2012 we expanded and established a Witney office when we acquired Petersons.

Clients like working with us because of the efficient and friendly approach of our team. The picture taken above was some of our team at a recent company social event !

The Partners are focused on supporting clients proactively and will directly guide them through any process; offering advice not only at the start but also during and after the implementation stage. Our aim is to fully understand all your business needs and match these with the skillsets of our team.

In response to client needs, over the years we have developed four services areas:

For clients this means that they have access to experts for all their personal and business accounting needs. You will see the full range of services here and that we also offer specialist support services such as forensic accounting, charities, property and agricultural accounting too!

It is the personal attention by Partners coupled with access to our approachable experts, who cooperate across all service areas, which clients value.

The MGroup plays an active role in supporting the local community.

This includes:

  • Sponsorship of Oxford United Football Club (‘The MGroup 1893 Club’) – some of our team are lifelong supporters, others have even been players! Click here.
  • Supporting and promoting the local business community through participation in events such as West Oxfordshire Business Awards – and we are proud to be sponsoring their ‘Employer of the Year Award’ for the second year running. Click here.
  • Active fundraising for two fabulous local charities SeeSaw and Special Effect including driving in the Twin Town Challenge. Last year we were dressed as Smurfs. As David Cameron said at the 2016 WOBA launch event ‘who said accountants were boring?!’

For further details about The MGroup Organisations and our Legal Information please see here.


We are efficient and friendly advisers and are always happy to advise you on any business matters.



I am very grateful and happy to be working with the MGroup. Our main contact is Jessica Mason. She has been fantastic to work with. We are a USA based company expanding into the UK. I have absolutely no experience dealing with VAT and other tax laws regarding the UK. Jessica has held my hand every step of the way and explained things and done detective work to help get the job done. There is no way I could manage this business without her help and her guidance. I would highly recommend her and her firm, the MGroup to anyone.

Kristin Garrett-Jarvis, CFO -  InfiniteAloe UK Ltd

"My company was recently introduced to the M Group because we undertook an MBO and they advised us to a successful conclusion. As part of this exercise they undertook due diligence work to show the lender that the deal would be fundable. In my view the standard of their work was excellent and I would recommend them to other potential clients. Many of the bigger professional firms no longer put their client’s requirements and interests first, they tell you what can’t be done not what can. I am glad to say that M Group are refreshingly different in this respect."

Simon E Hersh, FD – NS Optimum Ltd

"Mr Green has served as the personal tax accountant for my wife and myself since 2013. He has always been diligent and scrupulous in preparing our annual tax returns. He has also dealt efficiently and successfully with the Revenue Service on my behalf, regarding a charitable business account. I am pleased to recommend him wholeheartedly to any potential client."

Professor S Gordon

“Without a doubt, I recommend speaking with The MGroup. They are very knowledgeable, very understanding, have a good feel for our business and accommodate us quickly when we need help. We frequently get approaches from other accountancy firms and I tell them that we have no need to look elsewhere as everything is catered for very efficiently by Peter Smith and his team. I couldn't fault them."

Peter MaceManaging Director, TT Concrete

“Fortunately, when we were ready to expand our company to the UK we were referred to The MGroup. As a North America based enterprise we had little knowledge of UK business and tax matters. The MGroup helped us with everything from compliance and payroll regulations to establishing a banking relationship. The staff members are very responsive and we continue to rely on their support as our UK operations grow.”

Laurie Diaz, V.P. Corporate Controller, Yardi Systems

“Mark has given me excellent Corporate Finance advice and support for 3 years and I would thoroughly recommend him. He is very tenacious in finding suitable companies to acquire and then good at negotiating and putting deals together, including the all important funding. He is also very innovative in finding solutions to issues arising along the way.”

Mark Swaby is a Management Buy In client

“I used The MGroup for the first time to buy another Drainage Company to add services & coverage to my own. Mark and his team give a top rate service from start to end and we achieved the purchase within 5 months – good honest, knowledgeable advice from people who know their stuff.”

Paul Marshall, Unbloc

"It is always a pleasure dealing with the M Group as they provide immediate assistance when we need it and are always prepared to go the extra mile to provide an excellent service to their clients. I have no hesitation recommending them and we have been extremely satisfied for many years."

Mr D Rist, Kennington Flooring Limited

""The MGroup have really been there for me and my business through the good times and the more difficult ones. Their advice has always been spot on, and has really helped me to plan ahead and to consider angles on decisions which I might not have thought about otherwise. As well as being admirably clear and straightforward, everyone I have dealt with there has been friendly, patient, and thoughtful, and has really taken the time to get to know my business."

Jessica Harvey-Smith, Debate Chamber Limited


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The MGroup

Like to know more about how The MGroup can help you or your business?

Call our offices in Oxford 01865 552 925 & Witney 01993 776 476 or use our form.

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