Thanks for the replies. As I said, the camera downsize is in progress (I just need to learn how to use my mirrorless), and I’m thinking I’ll try to take photocopies of guidebook pages when I’m reasonable sure of where I’m going (I’ve done it in the past) – it’d probably also help to preserve my guidebook! Good to see that we seem to be of a similar mind. I’ve got another, slightly smaller pack which is 1 kg (300 g lighter) that I’ve used in the past, but struggled to get everything in/on it, though if I lighten the contents, that may get easier.
A good shout also on the spare headtorch – my secondary is an older and heavier one, which is probably worth upgrading from.
I’m inclined to keep the spare laces and med. kit contents, as I’ve found them useful. Likewise with the pad and pens, though I think I can thin them.
I don’t know if you’re familiar with climbing in the Scottish mountains in summer, but insect repellent is essential survival kit!
The weather in Scotland is pretty changeable, hence the waterproofs, but I’m thinking I could thin down the insulation.