No. In fact, as Chief Officer approval has to be given, it is quite likely that sufficient resilience will be available on that day to allow you to take your entitlement of a day’s leave on that day. If, however, you are required to work it, you will get paid double time.
NB It would be wrong for the Force to cancel another Officers rest day to allow you to have the Bank Holiday off. By electing a Bank Holiday you may still be required to work. However if the Bank Holiday you have nominated forms part of an unbroken period of leave it should be recognized you are on leave and be given the time off.