A group of MPs have written to HM Revenue & Customs (HMRC) to voice their concerns after an accountancy firm's clients were ordered to repay tax refunds they received years earlier.

Dr Dan Poulter, MP for Central Suffolk and North Ipswich, and Ipswich MP Tom Hunt have written to HMRC regarding Stowmarket business Apostle Accounting Limited.

As well as Dr Poulter and Mr Hunt, MPs Liz Truss, South West Norfolk, George Freeman, Mid Norfolk, and Duncan Baker, North Norfolk, are also signatories of the letter.

Dr Poulter said: "I am very concerned by the situation with Apostle Accounting and there are a number of issues to address.

East Anglian Daily Times: Apostle Accounting's office in StowmarketApostle Accounting's office in Stowmarket (Image: Newsquest)

"This is quite an unprecedented situation and I have also co-ordinated a letter from MPs collectively raising the issue with HMRC and requesting that they investigate further."

Apostle, which is based in Marriotts Walk in Stowmarket, was approached to comment on Dr Poulter's comments but without response.

However, the company previously said in a statement: "Apostle has been made aware of claims from HMRC against its former clients in respect of a historically offered service whereby Apostle assisted individuals to identify and prepare tax rebate claims in respect of work-related expenses.

East Anglian Daily Times: Dr Dan Poulter, Central Suffolk and North Ipswich MPDr Dan Poulter, Central Suffolk and North Ipswich MP (Image: Sarah Lucy Brown)

"Apostle in no way accepts the allegations against it or liability for payments HMRC may be seeking from former clients."

The business has come under fire from its former clients as many of them have said HMRC has pursued them for money they previously received through the accountancy firm.

The clients said they had used Apostle in the past to claim a tax refund – some to the tune of thousands of pounds, with the firm taking a 20% cut – only for HMRC to reclaim the money later on, saying they were not entitled to it.

East Anglian Daily Times: Ipswich MP Tom HuntIpswich MP Tom Hunt (Image: House of Commons)

Many of the clients told this newspaper they were left in the dark over what Apostle was claiming for on their behalf, with no specific breakdown provided.

Apostle has denied any wrongdoing – saying the issues clients have faced "showcase an incorrect application by HMRC officers of its own rules/guidance" – but said it was taking the matter "extremely seriously".

HMRC previously declined to comment on individual cases.