Police, firefighters and ambulance staff are currently at the scene of John Lewis in Bluewater Shopping Centre which has been evacuated. It is believed the chemical spillage was from a fridge in the department store.
There are unconfirmed reports of injuries as a result of the leak.
The on the spot justice system will mean shoplifters will be arrested, appear before magistrates and can even be sentenced without leaving the shopping centre, saving police and court staff time and money.
Bluewater has video links to five courts and is being rolled out after a successful two month trial.
Among those getting A-Level results today was the Olympic diving medallist Tom Daley. He also spent some time meeting fans at the Bluewater Shopping Centre in Kent, where he signed copies of his biography.