Firstly, thank you for all the welcomes and help so far.
Welcome to Rootschat.
I wonder if his will was handwritten or contained handwritten elements?
Regards
Roger
I forgot to mention that I had requested his will, turns out there sadly wasn't one.
Welcome from me too.
The parish register for the 1906 marriage, complete with signatures, can be seen on Ancestry (among its Surrey Church of England Marriages & Banns 1754-1933).
I will take a look at this thank you, I looked on Ancestry but did not come across this.
See also the 1911 census, for which the returns completed and signed by the householder are online.
I have a copy of the 1911 census for his household. Which comprised of him and his wife. It seems to feature two different handwriting styles possibly.
The words "Moudon, Switzerland" on the census for birthplace do closely match that of the handwriting in the manuscript book.
Edit - After avm228 pointed out the location of the marriage certificate I have compared the signature on the census and the signature on the marriage certificate with that on the manuscript and they do seem to have large similarities. Thank you avm228 for this as the extra source was of alot of help.
I will still try to find other sources as they will all help with the comparison. Ideally finding a longer written piece of handwriting over a signature, however this may not exist.