For what it's worth I have just looked at data stored in CFMU systems. This data is available to anyone registered for access to RCA or CHMI - i.e. most aircraft operators.
I looked at 25 RYR flights planned to arrive at EGSS after 2140 and before 2340 UTC.
Arrival messages were received from the following aerodromes:
EGNX 6 flights
EGGW 3 flights
EGBB 7 flights
EGKK 1 flight
Radar plots were recorded for 2 other flights terminating in the vicinity of other aerodromes and the remaining 6 flights deviated from flight planned route away from EGSS without Div Arrival messages being received and without landing at EGSS.
I did not look at any flights outside the above mentioned times. It's the end of a night shift, I'm tired and I'm going home.