You should take advice. Not necessarily from a solicitor, there are some really good independent will writers around. I will declare an interest because I am one. Have a look at http://www.tas-network.co.uk to find someone local.
Don’t do the WH Smith thing they are not worth it, they often cause more trouble.
Costs for basic mirror wills should be about 180 plus VAT.
Solicitor! It amazes me anyone would do anything else. If I was to get obliterated tomorrow the last thing I want is for my wife to find she has a problem with the will.
Our mirror wills with arrangements for the kids and every eventuality pretty much coveted was under £300 in total. That’s in southern england by a large local firm who are also holding the wills for us.
I know its a fair wedge for some but the cost for loved ones of unpicking a legal problem could be monstrous.