Many years ago a Victor Mk1 tanker was savaged by a Buccaneer which took the tail off. Victor bunted violently and exploded but captain's (Neddy Handscombe) top latch broke under negative G. The seat then came out through the debris and subsequently worked as advertised. Landed in cold north sea unconscious but seen descending by oil rig support vessel. Immersion suit torn and useless but crew of vessel did their best. Chopper picked him up at limit of its range and got Ned to hospital after several resuscitations en-route. Was flying again within year. He was only Victor crew member to survive. Buc landed virtually undamaged. I don't know if this counts as it wasn't really an ejection and it was successful!