National Lottery operator Camelot has thanked its retail partners, most of whom are independents, for helping it achieve a 5.9% increase in sales in the year to March.

Despite concerns over the growth of online sales, the 28,500 retailers with Camelot terminals accounted for almost 90% of Lottery sales and helped deliver a £190.7m increase in total retail sales from £4,571.1m last year to £4,761.8m. The operator said total commission paid to retailers since the Lottery was introduced was now £3.9bn.

Camelot Group sales director Duncan Malyon said: "Thanks to the hard work of all our retailers, this has been an exceptional year for Camelot and the National Lottery. Our outstanding sales performance and returns to the good causes have consolidated our position, but this has only been possible with the enthusiasm, vigilance and hard work of all our retail partners.

"Our relationship with retailers is vital and I'd like to thank every one of them for their fantastic efforts."

The Lottery raised £1, 548.4m for good causes in 2009/10, its best return in 10 years.