Io540
The leaking aircraft in the post above is one best examples of your opinion about the UK GA fleet, the owner has invested next to no money in it for years and this shows from 100yds away.
I simply could not rent out an aircraft in that state and face my customers, in my opinion a little water in that aircraft is the the least of your problems . . . . and flying in rain is the only time that it will get a wash!