Following the demise of my small-frame engine (after 80 miles) I stumbled across these chaps. After speaking with them over the phone, I took a chance & popped down to Welwyn with the engine. Very impressed with what I saw, so left it with them, to receive a phone call the following week to tell me it was ready for collection. First class service, they don't skimp on anything, every seal down to the last O ring was replaced, all the bearings were replaced with FAG items, the cases were cleaned & the small hole they found welded (liquid metal wasn't even an option). Great bunch of guys, very knowledgable & easy to get on with. Anything you need from advice, to engine rebuilds, to sourcing a particular scooter (from Italy) & restoring it for you, they're happy to help.
Just google Classic Scooter Shed for their website, alternatively speak with Travis 01707 376700, or drop in to Unit 4 Brownfields, Welwyn Garden City, Herts AL7 1AN