Is there a UK National On line Promo Program. Operating through E-Mail accounts, and is it real and legal?

I received an Email.Told me I have won by E-mail computer selection a certain amount of British Pounds Sterling. Is this contest legal. Source is UK National Lottery Headquarters.28 Tan Field Road.Croydon. London.Ref:UK/9420x2/68.Batch:074/05/zy369

Sorry, it's a scam. There is no such thing as a lottery of email addresses. The UK National Lottery is real, but they certainly have no programs like this -- in fact, they have published information on their site about email scams which abuse their name!