as a result of reading about some of the difficulties caused when we finally pop our clogs:
Wills can be lodged with the probate service, to avoid the problem of not being able to find the will, which has the added advantage that nobody can interfere with the will.
You might also consider having joint accounts (except for premium bonds of course) in different banks with full (unofficial) access for both of to all of them, so when one goes the procedure is to cash all the deceased one's premium bonds and transfer all the money into the survivor's bank account before telling the bank or or NS&I about what's happened.
Pork Pie Lady: I find the same thing with my books - after a year I can read them again confident that they are good books that I will enjoy reading. I have about a 1,000 and read two or three a week. I have annotated them to cover any tricky twists in the plot and with the ones that pop all over the place in time mark them with arrows so I can read them in chronological order (or in some cases as two or three different books!) in anticipation of not being able to read them myself in the future, as a guide to other people how to read them to me.