Pinsent Curtis has scored a double by winning two appointments to the private practice panels advising on the u475m Wembley Stadium project.
The firm's tax and construction teams were selected after a competitive tender process and will join other law firms on the relevant panels.
Senior partner Julian Tonks says: "We were delighted with this win which is our second major success recently, following hard on the heels of the firm's appointment by the DETR to advise on PFI and PPP projects.
"The new stadium at Wembley will be one of the biggest sporting projects this country has seen and is the centrepiece of England's bid for the 2006 World Cup.
"I am delighted that our specialist players in tax and construction will be part of the project. To use a soccer cliche - we're over the moon."
Wembley National Stadium refuses to reveal which other firms are on the panels.
A spokesman says details will be released later this week. It is understood Wembley National Stadium has nine legal panels, with three firms on each.