When I was 15 or so, I used to practice survival skills in local woods. I can make a damn good shelter in woodland (including a proper bed), and even dug a snowhole once (although I didn't dare spend the night in it!). I know how to trap and skin animals (even deer!), and can make a damn good bow and arrows. After years of trying, I finally managed to start a fire with no matches (or, before Danger asks, a lighter) using a bow, although this is much harder than it looks, and I had blisters on my hands for days! I stick to matches now. Not much good at fishing by traditional means, but can catch enough to feed myself using an improvised net.
As for "bits and bobs", a good knife is critical, although these days you have to be careful with the law and all, since in the UK you're never far away from civilisation. A good axe is a useful tool too, if you've got woodland nearby. Other than that, I probably wouldn't go on my own without a decent sleeping bag, plenty of waterproofed matches, and a full first aid kit. I could probably forego most other things, clothing aside.