Corsa-B.uk - Vauxhall, Opel and Holden Corsa B Owners Club

I've been uming and arring about buying a bee sting aerial of fleabay for around £12, but imagine my suprise when I walked into poundland and found a bee sting aerial with three different fittings for £1, yes I couldn't believe it either. Now it proudly sits where my stock aerial was and works like a charm and looks good aswell. My advice is always keep a look out in poundland as you never know what you could find to mod your corsa

Another way to do it even cheaper...
Remove the aerial pull the cap off with a pair of pliers and then use a hacksaw to cut it down.
Leave about the caps length from the top of the plastic base, then refit the cap and refit the aerial!

Hopefully should give you better reception than a bee sting too