Put PO5 3ST into your navigation system. Clarence Esplanade, Portsmouth.
The nearest station to the convention is Portsmouth Harbour.
Southampton International Airport is closest to the convention. London Gatwick and Heathrow are well connected to Portsmouth Harbour via rail services.
Portsmouth is easily accessible from it’s own port from Europe and the Isle of Wight, from there you can get the train from Portsmouth Harbour directly to Havant.