Frosts, based in Woburn Sands, won the contract to relandscape the gardens in advance of the Diamond Jubilee celebrations earlier this year.
The firm won the contract against competition from national construction companies.
Pictured meeting the Queen after the official opening ceremony last Thursday are (from left) operatives Carl Warick-Compton and Rob Hewison,with contracts manager Martin Wiles.
Frosts Landscape Construction managing director Ken White said: “It has been an honour and a privilege for Frosts to have been tasked with the re-development of the Jubilee Gardens, which our group won after a long bidding process.
"With all eyes on London in this iconic year, we knew that we had to create something very special and we are extremely pleased with the end result."