The boiler can be mounted in a cupboard provided there's minimum clearances all round. See
here.
Since the boiler uses a 'balance flue' system, there's no need to provide any separate air inlet to the cupboard.
Worcester provide wireless control thermostats for this model, but whether this extends to an actual programmer is not clear. If not, and given adequate technical ability, the control cable for a programmer could doubtless be extended to position the control outside the cupboard.