The award adds to gold medals won at Chelsea Flower Show and BBC Gardeners' World Live.
Nursery manager Ian Limmer said the award was "fantastic news" and followed the wettest June on record, which had made life difficult at the nursery.
At Hampton Court, Fryers launched ‘Bollywood’ a hybrid tea double, and ‘90th Celebration’, a hybrid tea with compact habit.
‘Scent of Heaven’ is rose of the year, bred by Chris Warner and will be widely available from the autumn. Roses UK launched the rose.
Style Roses launched 'Lightning Strike', bred by Ronnie Rawlins, who also bred 'Charles Dickens', another new rose from Style.