Our registration details Camelot UK Lotteries Limited, Registered office Tolpits Lane, Watford, Herts WD RN, Registered in England and Wales No..How to claim. Won a prize? Congratulations! Here s how to claim it whether you ve played online or in store. Please remember that all draw game prizes must .The official UK National Lottery website. Buy Lotto and EuroMillions tickets and check your results online. Play online Instant Win Games.. for general and media enquiries, Camelot offices, Camelot press office and National Lottery Good Brettenham House, Lancaster Place, London WCE EN.