Login or register (free and only takes a few minutes) to participate in this question.
You will also have access to many other tools and opportunities designed for those who have language-related jobs (or are passionate about them). Participation is free and the site has a strict confidentiality policy.
I had the same problem recently for the Maltese lottery, but they use the expression "terno" also in English. The National Lottery site gives Match 3, but I'm not a player so I can't confirm the common usage in the UK.