The London Mayor's Question Time was temporarily suspended today after protesters disrupted the conference. Firefighters chanted "No ifs, no buts, no fire service cuts", causing the Assembly members to leave the Chamber as order was restored.
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The operation carried out by Westminster City Council led to the seizure of £8,000 worth of cigarettes.
Armed troops have been stationed around Parliament to free up armed police to patrol the streets in the wake of the Manchester bomb attack.
Chelsea had planned an open top bus tour to show off the Premier League trophy and hope to add the FA Cup in Saturday's final with Arsenal.