You can get a Will kit from WHSmith (or whatever it’s called now). I think £30 or £40, which is what my Dad did, as I was his sole beneficiary and he lived in a house that belonged to me. It does, however, sound as if you have a DH, so it could be more complicated with pension funds, etc.
Sometimes there’s a ‘local offer’ when Solicitors will prepare a simple will at a very reasonable price, but around here, a simple will comes in around £400. (How long have you had yours kq for £40?).
My late friend and her DH took advantage of a £99 offer from ‘somewhere’, then couldn’t track down the Solicitor or their wills later.
Have you thought about setting up PoAs yet - then a Solicitor could do everything for both of you at the same time?