As for all RAF sporting activities, I doubt this was Public Taxpayers money. I reckon this money will have come form:
1. The RAF Sports Lottery - which is a fund raising exercise from Sports Club members own money.
2. The RAF Charitable Trust - this is a trust fund set up and managed with donations. It also runs the annual Air Tattoo at RAF Fairford.
3. The Nuffield Trust set up by Viscount Nuffielf with about £1.5M in 1939 to provide access to non-public money for sporting/recreational activity for all HMForces.
The Nuffield Trust (for the forces of the crown) - The Nuffield Connection
4. The RAF Central Fund - another large amount of money held in charitable trust
RAF Community - RAF Central Fund
So I would offer that not a jot came from the Defence Budget and that the Golf Simulator would be an encroachment to provide accomodation for the simulator - that is about the only link to the Defence Budget.
LJ