Maybe there are a few things that might help: Medical services are effectivly doing the same job so why have 3 of them? Or in case of Army why have 3 separate corps? Medical,Dental & Nursing? yes amalgamation will save maybe a few million but its still a few million saved.
Cut 32Sqn back to supporting senior officers and Royals and ban politicians and civil servants from using it.
How many of HM Forces are undeployable? a Reservist who goes on FTRS is payed X factor at a rate dependent on his/her deployable status so fully deployable gets full X factor, Home only gets it at reserve rates and Un deployable doesn't get any. Maybe that should be applied.