Thanks for all your comments folks but we've drifted off-topic! Well, I've just tried out my new aforesaid Trueshopping (awful name) cordless chainsaw. Came fully assembled & adjusted, with charger & even a bottle of oil. Just £65 direct from TS, said to be half price. Tough looking bit of Chinese kit, 10" blade, no 'safety cap' on the end to get in the way. But light, 2.8 kg (6 lb) inc. battery which takes 10 hours to charge from flat, a long time. First impressions after using a mains chainsaw - quieter, less powerful, blade much slower. But cuts well, just takes longer. Also nice to handle, good balance, excellent hand grips & trigger. Will report later on battery life once I've had a proper session with it. If you want the bees knees buy a Stihl for £300+ but heck, £65 isn't much to lay out and it's got to be better than a bowsaw!