Hi missus has a e61 5 series beemer that has a towbar but was missing the swan neck when we bought it I think I've worked it out to be a Witter one , don't suppose anyone has one even better if it's in or near Bristol that I could try or buy to see if it's correct ???? I need one asap, don't wanna risk a eBay one if it's not a Witter I'm sure a few from a lot of cars will do( maybe slight different heights etc ) it's only to tow a bike trailer

 

Can Witter identify it for you from a good quality pic emailed to them...they have the interest in selling you a replacement.

Silly question but have you checked behind all the rear trim panels like where the first aid kit is as that is where I would stash it.

Also (longer time scale) but write to previous owner as they may just have it in the shed.