St Mary the Virgin, 1 Langley Dr, Wanstead, London E11 2LN
Some carols for choir only
In the Bleak Midwinter (Holst)
Candlelight Carol (Rutter)
There is no rose of such virtue (Joubert)
There will be one to few more carols for choir only, along standard carols for choirs and congregation.
There is also small and uncertain possibility that the Church School Choir will join the service with (simple) carol(s) that needs to be accompanied by organist, but if any, that should be at very reasonable difficulty.
Meanwhile, rehearsal on the day is currently pencilled down at 4:30 pm on 17th December (Sun), though that might be rescheduled to 4 pm for allowing more leeway between rehearsal and service.