Many years ago I was given bad advice, I had been told I could use any name I wanted and didn't have to do it by Deed Poll, fast forward to last year, I sent my driving license in to DVLA to renew as I was almost 70, they refused it as they said the proof of identity I sent wasn't good enough to prove the links between names, I turned to Deed Poll Office, and it has been straight forward from start to finish, DVLA were happy so I am happy, I also have spares if I ever need them.
I can't recommend this company highly enough.
Thank you so much.