The boy has been complaining about the flush in the bathroom toilet (we don't use it much, as we have en-suite), not enough 'oomph' to flush as away his 'deposits', so had a look. It was filling way below the marked line at 6 litres, and the refill was a dribble, took many minutes. Took a few bits off, but decided at £12 for a Toolstation replacement, I'd just do that. The nut underneath the bottom fill valve was shrouded by the rear flange on the toilet pan, but I could twist the body, until the point where the float hit the side, and couldn't get the float bit off, as the removable top section would not remove. Not enough room for a hacksaw, so resorted to melting through it with the soldering iron. After joining all the holes up, I was able to wrench the top section off, remove the float and twist the body free. Replacement was a doddle. Good guess on the adjustable height, right first time, halfway between the 6 litre line and the overflow. All good now, decent flush and quick fill.
Then replaced the UV tubes on my Avatars vivarium.
Having a short break, then 2 cars to wash and chicken parmigiana to cook later.