Three points. First, I don’t take this seriously. These groups need to be on the main board, not a token sub-committee.
Second, it is quite unacceptable to ask people to do this for nothing. Why should a small business person lose revenue to work for HMRC? The days when jobs went to those of independent means should be over. There’s also that thing called the minimum wage to consider, in my opinion. HMRC is not a voluntary organisation and HMRC is meant to both enforce this regulation and so, I think, set appropriate standards for behaviour.
Third, I will not be applying, but if anyone is interested, give it a go.
The man who gets £65k a year precisely to be the civil society voice on such things shouts that being paid £65k a year isn’t enough.