City firm Lawrence Graham has beaten off five firms to win a place as adviser to the National Lottery Commission for the third time.
The five other London-based contenders for the contract included Field Fisher Waterhouse, which is understood to have come a "close second", after being only one of two firms to reach the final draw of the tendering process last month.
Lawrence Graham originally won the National Lottery regulator's contract in a similar beauty parade in 1993, when the work was put out to tender for the first time. However it was forced to pitch again in 1996.
The bid for the three-year contract initially involved a written submission, followed by a presentation and a further interview.
A four-strong team at Lawrence Graham pitched for the business led by Michael Storar, head of the corporate department with support from corporate partners Wendy Batchelor and Richard Elphick and assistant Fiona Gelsthorpe.
Batchelor says it is unknown how much the contract is worth: "It is not one of those fixed-fee contracts, it is for a set period of time as were the other contracts we were involved in."
Storar says: "We were heavily involved in the last round of the bidding process and a Camelot evaluation team was even set up in our building."
He says the firm's first task under the new contract will be the bidding process for selecting the next National Lottery operator. "We have already been working for some time on what happens and will continue to be heavily involved for the next two to three months."
Storar says his team works "fairly closely" with Treasury solicitors, the in-house lawyers for the National Lottery Commission.
Lawrence Graham advises on corporate, commercial, finance and intellectual property while the Treasury solicitors advise on constitutional issues.
The current National Lottery operator Camelot has its own panel of firms which includes Cameron McKenna and Baker & McKenzie for corporate and commercial work.
Camelot has also retained Macfarlanes to recommend firms to advise lottery winners. Macfarlanes suggests up to three firms for the private client work, which are introduced to the winners on rotation.