DDG Shooters were massivly popular in Nottingham for some reason. R+R bikes still get people in asking for them
If that is your bike then someone has gone to the trouble of changing:
Forks
Stem
Bars
Saddle
Seat post
Rear Mech
Rear Brake + removed the front
Tyres
This is going to make proving the frame, wheels and chain device are yours almost impossible unless you've got a frame number