Danny,
I presume you are talking about the fellow in this ebay posting?:
http://www.ebay.co.uk/itm/WW2-RAF-X-...item1c2fdf7006
If that's the case, then you've bought a bit of a mess.
The service number on the ebay listing (127045) comes back to an Ernest John Townsend Boucher 903317, commissioned 29 June 1942:
http://www.google.se/url?sa=t&rct=j&...sbUbYO-BYnf3yw
No sign of any DFC.
Regards,
Dave