PR agent needed for the launch of a new meal sharing platform in Brighton (UK)

We are launching an exciting new on-line meal sharing platform in the UK but initially focused on our pilot area of Brighton. Looking for an experienced UK based (preferably Brighton) PR agent to help get us exposure in Brighton and nationally. You will be working in conjunction with our marketing agency. We will need a flurry of PR for the launch, then follow-up PR to help 'bed' the concept in the Brighton & Hove area. If you turn out to be 'top drawer' at your craft, there may be the possibility of a long term relationship to help the concept 'bed' across the UK.