Drivers are being warned about traffic delays on the M25. Anti-clockwise between junctions J25 and J24, there are currently delays of 15 minutes due to a luxury sports car on fire, closing three lanes. Normal traffic conditions are expected from 2:15 pm.
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It is the fourth time in five years that the London borough has topped the rankings, according to data from the ONS.
Catherine Burke's body was discovered at a house in a quiet street in Muswell Hill last Thursday evening.
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