Just got back from MAN, complete with my bag
Can't thank the fantastic staff at the airport enough, these were actual airport staff rather than BA staff who were helping out myself and several others get this missing luggage back.
Was only without it for a couple of days, so props to BA for finding it and getting it to me so quickly.
I'd advise anyone to keep checking ba.com/baggage and view your status - make sure you actually click on the tag number link, this is how I found out my bag was en-route, and decided to go to the airport myself and collect it rather than waiting for a courier (I'm lucky that I'm in a position to do this)