Garage have now fitted 2 or 3 genuine CKP sensors but the moment the revs go over 1200 rpm it logs this DTC.
Ross tech direct me to TPI 2007067 which apparently is a fix for electrical interference on the CKP circuit.
Have scoped CMP/CKP and it is steady, showing no sign of interference or sync issue.
Couldn't find TSB on Elsa so struggled to set up Erwin again after Adobe updataed itself and wouldn't let me re-install the version below 9.1 that worked.
Finally got on Erwin, got it displaying properly and parted with my 4 euros to find exactly the same content for this vehile as Elsa :'(