C&SC is running an article next month (April mag on sale early March) asking "Is the best £20k supercar a Honda?". They will put it against a Ferrari 308.
Also, don't pay for a list of speed cameras for your GPS, download regular updates here: http://www.pocketgps.co.uk/uksafetycameras.php. I highly recommend the Tom Tom Go (£400), but it looks like the database works with most types of GPS.
I was messing around at the weekend and test drove a Caterham 7 - couldn't wait to get back into the Honda. They're great cars, but I'll wait until global warming turns us into a tropical country before buying one. They've got an offer where you can hire one for £125 per day midweek, which I might look at in the summer.