Luggage Austin Where Can I Get Flowers From At Heathrow?

Where can i get flowers from at heathrow? - luggage austin

According to the guide London Heathrow Airport (http://www.heathrow-airport-guide.co.uk/ ...
The only thing that can be obtained from security checks:
Customize
Austin Reed
The Body Shop
Boots
Cigar House
Impulse
Primus
Rolling Luggage
WH Smith

I want to make a bouquet of flowers for when my girlfriend.
If you have any idea of the store that sold more likely to flower? (Looking for roses in particular)

Thank you!