The UK has 3 different lotteries under the same company. Lotto Wednesday and Saturday,Thunderball Wednesday Friday and saturday and Euro Millions Friday.
All the tickets sales finish at 7:30PM on the day of the individual draw(s). The draw(s) can then take place as early as 8:00PM or as late as 11:00 PM depending on day of week and TV schedules.
They have just introduced a extra draw on the days when there wasn't a Lotto draw.
I play online so no chance of being cheated out of winnings 
With so many draws it's easy to win small amounts , quite often I win small prizes £3 £5 and £10 but still waiting the big one.
Al
Team UK Winners Full Tilt Poker Team Cup III
Individual Winner PKR Cup III