like a TV and a DVD player? They are working fine but I no longer need them and can't be bothered putting them on eBay or similar. I would take them to a charity shop but I don't think charity shops take electrical goods.
There's a charity shop on jamaica road, just across the road from bermondsey jubilee line station. (100m northwest when you come out). They've always taken my electrical stuff when I've had enough of it without problem (obviously in working order).
The hospice charity shop on the walworth road (by westmoreland st bus stop) seems to take more or less anything, and they have a chap fiddling with electrical stuff in the back so I think they would take these.
Otherwise there is a place on tottenham ct rd on the west side near maplins that pays cash for working electronic things.