My wife and I did ours through a solicitor, who specialises in Wills/Probate stuff, over six months ago. (Before I discovered I had inoperable cancer just before Christmas), as there are certain people, we don't want making a claim on either of our assets.
Feel so glad we did it when we did so those people can't say either of us was pressured by the other person.
For instance, when we married, over six years ago, we knew my wife would inherit her stepdads' home and savings etc. I insisted that I did not want to inherit anything that her dad had spent his life building up for his family. So my name is not on the house records etc. The only thing I would accept, and she and the solicitor agreed it would be for the best, would that I would be able to live out the rest of my life in the family home if my wife passed away first.
I would urge anyone who doesn't have a Will to get one drawn up now. If you divorce, or seriously injured in an accident etc, it can be a nightmare for your executors to try and sort out, and cost a huge chunk of whatever ever money you may have.
Sorry to hear about the cancer. Best of luck- for what it is worth.