No,jno 'all to mum' was contested.The man called his wife 'mum', she being the mother of his children, and his mother was also his 'mum', so the ladies argued about which one was meant ! ( I thought it was an ordinary will duly executed but if it
was a 'soldier's will' one made on active service, traditionally in the soldier's paybook. and, exceptionally therefore, not subject to the usual formalities it would have been contested just the same because of the ambiguity).
A solicitor would not have made that mistake.
You can buy a will form, with instructions, at places like W H Smith or,of course, a law stationer's but going to a solicitor is safest.There are traps for the unwary in doing it yourself .