From the 'A Friend of Queen' website:
The Freddie Mercury Rose was propagated in 1993 by Battersby Roses and registered with the International Registration Authority For Roses in the USA, The naming of the Rose was decided on Fan club members who donated to the fund in order to raise the £2,000 needed to name and register it. The money was quickly raised and the first bushes were made available early 1994. The rose is yellow with a pink tint and was chosen as Freddie's favorite roses were yellow.
The first Freddie Mercury Roses were sent to Freddie's mum, his sister Kashmira, Mary Austin, Roger, Brian, John and other people that were close to Freddie. Since then a limited batch have been propagated every year and have been made available at Queen conventions or through Battersby Roses themselves with a donation of each sale going to the Mercury Phoenix Trust.
This rose reminds me of the Peace rose I used to have. I might have to try this one.