I have recently had a nightmare with a company advertising in the UK as a Ltd company. Despite winning a court case against them I cannot get my money back as they are in Belgium. I have just discovered they are expanding to Ireland. If you ever get an e-mail from a Tullia Law - run as fast as your feet can carry you.
The one that ripped me off for €4150 ishttp://www.gastric-banding-surgery.co.uk but she has 11 other companies in UK France & Ireland.
I don't expect you to believe me but google earth the addresses - UK is basically a P O Box number with over 50 companies registered there. The French address in Calais is a flat over a shop not a Clinic. All telephones will go to an answer machine in France and you will be called back. No signed contract or T&Cs will be signed or issued to you.