Can this be held in a SIPP?

Yes. Many of the mainstream SIPP trustees already hold the fund.
TM home investor fund satisfies HMRC’s definition of a ‘genuinely diverse commercial vehicle’ (information on their website here https://www.gov.uk/hmrc-internal-manuals/pensions-tax-manual/ptm125400#IDANC0MD) and, as such, can be held in a SIPP without triggering unauthorised payment charges or scheme sanction charges.