Had Lasik at the Finchley Road, London branch with Dr Patel in May 2006. The surgery was uncomfortable but not painful and my recovery was swift. Unfortunatley I still have a significant astigmatism in both eyes and have been advised by Dr Patel I will need retreatment, at least in my left eye. I'll have to wait at least another 4 months before I can have this though.
After 3 weeks I'm just at driving standard but are still noticebly short sighted. My eyesight is much improved compared to pre-treatment but as I can currently not wear contact lenses my eyesight feels a lot worse.
I'd recommend you only have treatment if you are prepared to live with having eyesight worse than when you wear your glasses or contact lenses.