Hello, I'm going to answer the questions, and then bow out. I don't want to appear to be pushing DiY wills, it's just that I think they can, on occasions, be useful.
The definition of 'necessary' has been in my case, when being guided through the LawPack questions - although on both occasions I thought it would be needed.
On 2 occasions I have done a DiY will. Should I have become incapacitated and unable to alter it, it really wouldn't have been too awful. The first said 'everything to my spouse' and the second ' everything divided equally between my (named) children'.
On the occasions I have used solicitors, it has been about the guardianship of my young children, and now, setting up a trust for the grandchildren, and also leaving money to my children's partners.
The wills I have been involved in executing - the DiY was kept up-to-date, was straightforward and simple. The other 2 were allowed to get old. No, there wasn't any negligence or poor practice, and neither were they complicated.
One will stand as an example: after fifty years it had passed through the hands of 4 solicitors' firms as they merged / were bought up etc. The employees of the solicitor who were named as executors, along with myself and another family member, were now 'unknown'.
The solicitor now holding the will quoted for executing, but also admitted to having a lot of work on. Having previously executed the simple DiY will, I realised that the bulk of the work was basic admin / detective. I might not be as efficient as a solicitor, but I had time and motivation to get it done. So I tracked down surviving relatives, found death certificates, made declarations etc. It cost me a few bunches of flowers along the way. Having established that I was now the only executor, the rest was simple.
I will add that Probate Office were extremely helpful in all cases.
I did my last will and its last alteration with my husband, and am happy with our solicitor. I am not going to put how much we paid because it wouldn't be helpful.
I hope that this debate has been helpful, and would again point out that the MSE site has a lot of helpful advice and discussion.