Another little JPA wrinkle. Found this on the RAF Club website - I don't think it's widely advertised elsewhere. If you want to be able to claim actuals when staying at the Club from here on in, you have to book through CHBS. Otherwise you could be substantially out of pocket as the PAHA rate won't cover the cost of staying there.
On duty in London and need overnight accommodation? WEF from Apr 06 the introduction of JPA means that the AP3392 Vol 3 Leaflet 108 details are only applicable to Reserve Officers.
The new Tri-Service Regulations for Allowances state that Service personnel who are
members of Service or Civilian Clubs may choose to stay in these clubs, which can be booked through the CHBS or direct by the member. However, the Service person may claim actual expenditure only when the accommodation is booked through the CHBS. Otherwise, reimbursement is limited to the MOD PAHA NS limit.
The key thing is that CHBS must make the booking for the individual to claim the 'actual' costs as opposed to the Private Arranged Hotel Rate (which is capped). Current PAHA rate is £53 for B&B!