Reviewed: Goodbye Batteries' LED bike lights

I've managed to get my grease-stained mitts on those new battery-free bike lights I was rambling about the other day. True to the claims, they're simple enough even to fit, even for cycle igoramuses like me - all you need is a Philips head screwdriver and five minutes to stick them on your spokes and axles. Better still, they're as bright as my £30 Cat Eye LED lights. There are, however, three large Courtney Love-sized riders that let things down. The first is that if you remove your front wheel when you lock it up - I live in London, Home of The Professional Bike Thief - the light will sometimes wobble off the axle. Second up: unless you're cycling at a fair clip, they don't light up at all. The real problem, though, is they don't flash when you're stationary, so you need a second set of battery- or solar-powered lights to deter lorries from squishing you. In other words, these nifty green-powered LEDs are less a matter of Goodbye Batteries, more a case of Hello Greater Visibility. They're £25 from here.