CH840400 | Agent operational guidance: poor agent behaviour: agent's behaviour, although legal, gives HMRC cause for concern: difficulty getting information
From HM Revenue & Customs · Compliance Handbook
When you write to agents asking for information you may experience difficulties because the agent
sends an evasive or incomplete response
will not reply to letters
repeatedly promises to provide information, but then doesn’t do so
provides only a part of the information you require to complete your check
refuses to supply statements for private bank accounts, even though it is reasonable to expect such accounts may contain information relevant to entries in the tax return.
You should take some time to check that the agent is not experiencing difficulties with your requests. They may, for example, be suffering from staff problems in their office, or their client may not be able to supply the information they need to reply to you, or the client has not paid the agent for work done.
You can address most forms of resistance and delay by using your powers under FA08/SCH36. You can use these powers to
gather information and examine documents
inspect business premises and the business assets and business documents on those premises.
Information and inspection powers and how they should be used are explained in detail from CH20000.
If the agent’s behaviour could affect penalty reductions for disclosure, see CH871000.