asked Her Majesty's Government:
Whether they agree that, as a general principle, participants in games of chance that are widely advertised to the public should be made aware by the promoter of either the average return to participants (the total distributed as prize money divided by the total money wagered), or the chance of winning a specified prize, or both.
§ Lord Williams of Mostyn
Yes. This is a statutory requirement for the larger lotteries, and I agree that smaller lotteries should follow the same principle.