Sniffer dogs and fibre optic cameras are among the tools used as part of a £2m police operation to prepare for the Lib Dem conference.
This weekend around 8,000 delegates will descend on Brighton for the get together. It's the first time in five years the party have visited city - and their first ever as part of a coalition Government.
Still, with proests planned and a slow summer season to make up for there's plenty of work for the police, politicians and businesses to be done. Andy Dickenson speaks to Adam Bates, head of tourism at Brighton and Hove City Council, and Insp Niall of Sussex Police ahead of the event.