Just flagging up this story just published about an adoption order than was revoked many years after being made, for those of us who watch these things with interest.
The judge was clear that this was an exceptional case (possibly a completely unique set of circumstances?), so I don't think that adoptive parents should be unduly worried, though I am uneasy about the principle of being able to revoke an adoption order rather than, say, make a new order even if it would have the same effect as revocation.