Thank you all for your invaluable help.
I will post some pictures of the bike as it is now and has I go along restoring it if that is ok with everyone

Thank you

Andy

Hello
I hope someone can help me on identifying my bike, I believe its a rocket 3 but with no plate on it I have no idea what year it was made or registered, I bought it has a restoration project. It is quite rough, painted blue with a blue frame, the speedo is missing and the rev counter has a black face but is in a bad state. The exhaust is a 3 - 1 which is definitely not a BSA exhaust as it looks like a plumbers nightmare. I have seen a couple of different styles of exhaust on the rocket 3, the ones with normal silencers on them and the ray gun type, which ones would my bike have had on them originally?
I have attached pictures of the engine and frame number but I think they read.
Engine - NE00157 A75RV
Frame - NE00157 A75V the second zero is very faint but I think it is a zero, I could double check by removing the paint if you think it would help,

Thanks in advance

Andrew