Countries participated are: the Republic of Ireland, the UK, Spain, Belgium, Luxembourg, Portugal, France, Austria and Switzerland.
You can buy lottery tickets including EuroMillions online:
www.national-lottery.co.uk/player/p/home.ftl
EuroMillions has two draws each week: Tuesday and Friday, and each ticket costs 2 pounds.
Results can be found here:
www.national-lottery.co.uk/player/p/results/euromillions.ftl
For more, you can go to www.national-lottery.co.uk/player/p/help/lotterydrawgames/eu