Camelot is to add an extra 8,000 terminals to its network after the National Lottery Commission extended its licence to operate the National Lottery by another four years.

The National Lottery Commission said it had agreed to the licence extension – which now goes up to 2023 – in exchange for Camelot making the investment required for the extra terminals.

The additional units are expected to increase the money raised for good causes by between £400m and £750m over the next seven years.

Camelot will decide where to locate the extra terminals according to where they will generate the most cash for good causes. It has also pledged to refresh PoS throughout its estate by 2017. There are currently 29,000 terminals operating in the UK.

Camelot had initially requested a five-year extension in return for the 8,000 new terminals.

“This investment is likely to secure a significant increase in the net proceeds of the National Lottery and we are therefore pleased to accept Camelot’s proposal,” said NLC chairman Dr Anne Wright.

“The Commission has not identified any issues that are likely to have an adverse impact on either the propriety of the running of the Lottery, or on player protection. We are satisfied Camelot will extend its arrangements for prevention of underage play to cover the new terminals.”

Camelot sales director Duncan Malyon added: “Retail remains our largest sales channel – accounting for around 85% of all sales – and our retail partners continue to play a pivotal role in the National Lottery’s success. Thanks to their tremendous efforts, our in-store sales grew by a further 5% to almost £5bn in 2010-11 and have now increased by over £470m in the last three years alone.”