Clutch side:


Rocker cover front (a difficult area to take a good picture. It's quite wet all along and some 'build-up'):

Generator side:

Sorry, I forgot to rotate the large pics!
I've never done anything like valve clearances but will have a go if you think the cover's got to come off/they should be checked. The bike was last properly serviced [by a garage] a few thousand miles ago. Since then it's been oil, filters and plugs changed once and mostly mothballed in the garage.
Thanks in advance!