« Reply #3 on: Tuesday 09 August 16 14:23 BST (UK) »
The person whose details from electoral register I sent a PM about, seems a good fit for the 1968 marriage, but not for the birth you have.
If you google the full name in quotes, he comes up on various company directors list for a company registered at the later of the two addresses I gave you. Information from the directors list gives his month and year of birth which is not the same as the birth registration you have with Cartwright as mother's maiden name.
Berks / Oxon: Eltham, Annetts, Wiltshire (surname not county), Hawkins, Pembroke, Partridge
Dorset / Hants: Derham, Stride, Purkiss, Sibley
Yorkshire: Pottage, Carr, Blackburn, Depledge
Sussex: Goodyer, Christopher, Trevatt
Lanark: Scott (soldier went to Jersey CI)
Jersey: Fowler, Huelin, Scott