So the engine went of for a complete overhaul including;
New piston and ring set
All new bearings
All new oil seals
All new bolts
All new gaskets
Engine paint and refinish
The only hiccup we had was that the carburetor was actually broken so this got replaced with a genuine 18mm Kehlin.
All the work was carried out over 3-4 days and my engine was posted back to me, all in including postage both ways the engine was away for 10 days, not bad!
Dirk also posted back the old parts, check out the state of the original piston bellow!