Boris Johnson has called again for lorries to be made safer, after a cyclist died in a collision with one during this morning's rush hour.
The woman was pronounced dead at the scene in Victoria.
Rags Martel reports.
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The 47-year-old man died shortly after 3pm on Tuesday.
Specialist explosive detection dogs searched through the town examining letter boxes and phone booths for signs of potential devices.
Temperatures reached 29.1C in St James's Park, central London.