Hi - we had 4 failed attempts at IVF at the Lister and then went to ARGC and got pregnant first time. They are the most expensive clinic in London and their methods are controversial (in the UK - but not compared to US treatment - as I was given the same treatment in the US and also got pregnant). I cannot recommend them highly enough. At ARGC IVF is like a full time occupation though and you will be seen twice a day for scans and blood tests and have your drugs considered and probably altered on a daily basis. Good luck. Infertility is an awful thing to go through.