Keeping track of every car I try now, for my own reference to put into a spreadsheet eventually:
2002 Ford Mondeo 1.8 Zetec £1,000 £700
1999 Honda Civic 1.4 Fusion £1,000 £658
2000 Toyota Yaris 1.0 16v VVT-i £1,000 £471
2001 VW Polo 1.9 SE TDi Saloon £1,000 £770
2000 Ford Focus 1.6 Zetec £1,000 £582
2000 Skoda Fabia 1.4 16v Comfort £1,000 £591
2000 Peugeot 206 1.1 LX £1,000 £510
2003 Mazda 323 1.6 GXi £1,000 £630
1997 VW Golf 1.9 GL TDi £1,000 £580
1999 Nissan Almera 1.4i £500 £519
1998 Nissan Micra 1.0 Passion £500 £450
1997 VW Polo 1.4 L £500 £496
Renault Megane 1.6 16v £999 £640
1999 Rover 200 2.0 SDi £1,000 £620
1999 Seat Toledo 1.9 TDi SE £1,000 £580
1999 Mitsubishi Colt 1.3 Maui £1,000 £555
1999 Ford Puma 1.7i 16v £1,000 £720
Try a Citroen ZX. It's obscure enough that it might be an insurance winner, and since it's basically a Peugeot 306 it should be reasonably good to drive. Well, better than a Micra anyway.
1997 Citroen ZX 1.4i £550 £456
DING DING DING WE HAVE A WINNER!
Electric windows, central locking, power steering, airbag, 10 months MOT, 6 months tax and 0-60 in 10.7 secs from 75bhp (when new). I can't believe I could get that for a little more than a Micra!