Thank you for replies so far, I am in contact with George's Gt Gt Granddaughter who is trying to find info on James, George's Father, I think you may have come up with a couple of leads.
I note dates of Birth we have for George and Mary and ages on marraige Cert; don't quite add up, maybe they married under age and not checked back then - I don't know just a thought.
I have looked at James Whittle Mead Death, checked 1851 Census and doesn't show up as having lived at 73 Westbourne Park Villas, but this was a year before his death and may have subsequently moved in.
Again many thanks for info, a few leads to follow up in meantime any further info would be welcome.
Pete