Camelot got the ball rolling on its third National Lottery licence last weekend by closing its 27,600 terminals for an upgrade.

Terminals were down for 24 hours for the system upgrade, which Camelot claimed was one of the largest-ever lottery switchovers. It has replaced gaming systems to support updated communications and Camelot’s new Altura terminal network.

Retailers were still able to sell scratchcards but could not sell tickets for draw-based games or process prize claims.

“The upgrade was completed on time, with our terminal network running first thing the next day as planned – some terminals were trading a little ahead of schedule,” a Camelot spokesman said.

There were no problems because retailers had been warned of the shutdown well in advance, he said, adding that preliminary indications were that sales were up on an average week due to rollovers on Lotto and EuroMillions.

Retail commission on scratchcard games also increased from 5% to 6% this week, while commission on draw-based games remained at 5%.

Camelot won its third licence in August 2007.