RM3564 | What to do when you get the first claim from an attorney
From HM Revenue & Customs · Repayment Claims Manual
When you get the first claim from any attorney the claim and papers must be submitted to a technician at Officer grade to
find out why the taxpayer has appointed an attorney
get the original document appointing the attorney
consider why the taxpayer is unable to sign the claim
and follow the guidance at IDG52250