In reply to Jack93:
I've sent 2 sets of cams back to BD for reslinging recently and they've taken about 3 weeks from posting to get back to me. But I'm in the US, so I would expect they would take at least a month, and maybe more like 6 weeks total time back to the UK. The new slings look perfect, exactly the same as the old ones, and the cost was very reasonable ($8 per cam including shipping back to me).