Overall I agree, but I tend to think too many people have the "head to the woods!" mentality ,and will soon realize that it'll be a tent-city. Looking at the OP's list, it seems he's gearing it towards this. IIRC, AFLM lives in the UK, which can be really variable in population density.

In what situation is he planning to bug out?

That's the million-quid question. In most situations it doesn't make sense to leave a structure with a lot of supplies, to go live in the woods with few supplies. If some unspecified event is so catastrophic that his friend's house is uninhabitable, either A) he can go to a hotel, or B) he's going to have a lot of company from other people leaving their devastated houses.

In and of itself the list of supplies looks fine. Like I said though, it doesn't strike me as a BOB, it strikes me as "I'm going camping with the Boy Scouts for a week" type of bag.