Retailers have welcomed Camelot’s decision to double the price of a Lotto ticket to £2.

The lottery operator said the autumn increase - the first since its launch in November 1994 - would rejuvenate sales, which have been in decline.

Camelot lottery sales were £5.2bn in the year to March 1996 from just one game. Despite introducing scratchcards and four more draws since, sales last year were £6.5bn.

Independent retailers, who earn an average £7,800 a year from the lottery, were pleased they would receive the same 5% commission while also benefiting from increased sales.

However, they expressed concern about a possible consumer backlash, with social media campaigns threatening to boycott the lottery, claiming the increase was “sheer greed” and “a tax on the poor”.

The rise is 32p more than the £1.68 a Lotto ticket would now cost if it had increased in line with inflation since 1994.

“Our extensive consumer research has shown us that Lotto players want more ways to win more money,” a Camelot spokeswoman said. “Lotto players will win £25 for matching three numbers [up from £10] and there will be bigger jackpots. These changes will generate significant incremental revenue for good causes, as well as boosting retailers’ bottom lines.”