With protests already planned for this weekend's Lib Dem party conference in Brighton the police, politicians and businesses will all have their work cut out.
Around 8,000 politicians will descend on the south coast for the party's first get together in the city for five years. Andy Dickenson reports.
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Any lingering showers clearing into tonight with a mostly dry but chilly night ahead. A cool but sunny start to Sunday.
Further heavy showers gradually clearing away this evening. Dry but chilly tonight, then dry with plenty of sunshine tomorrow.
Heavy showers turning potentially thundery this afternoon. Becoming dry but chilly tonight, then dry and sunny tomorrow.