A spokesperson said earlier: “We expect to complete tonight’s Lotto draw and publish the verified results on national-lottery.co.uk later this evening and apologise for the delay.”
The stream for the draw on the National Lottery YouTube channel was unavailable on Saturday evening.
The National Lottery operator changed for the first time in 30 years in 2024.
Camelot had run the lottery from its base in Watford since the game’s launch in 1994, but its licence ended in January last year.
A 10-year licence was given to new operator Allwyn, which has continued to oversee the draw from the former Camelot offices.
International operator Allwyn Entertainment is owned by Czech oil and gas tycoon Karel Komarek.