An isolated shower passed through with a heavy core.
FR4054 was the only only divert and he went to BHX.
Nobody 'held off' and the 4054 was not subject to any holding or delaying vectors but the 4054 was unlucky with his timing (and his fuel presumably) and came onto finals just as the core drifted to sit right on the final approach.
He hit the weather, decided he couldnt get it down safely and elected to proceed straight ahead and handover direct to BHX App. and divert into there rather than wait.
Passengers were coached to EMA and the A/C then positioned into EMA about 45 minutes later.