Fire at landmark London building Marconi House

A fire at a landmark building in London's West End has been tackled by about 75 firefighters.

Twenty fire engines were sent to tackle the fire on top of Marconi House, at the junction of the Strand and Aldwych, at about 1100 BST.
The blaze affected about a quarter of the 1,076sq ft (100sq m) roof, London Fire Brigade said.
There were no reports of people trapped or injured and the cause of the blaze is unknown.
London Ambulance Service sent paramedics and five specialist hazardous area response team units as a precaution.
The fire sent smoke across the London skyline.
A London Fire Brigade spokesman said: "We now have 20 fire engines at the fire in the Strand.
"There is still a lot of smoke so we advise (people in) nearby buildings to keep windows closed."
Hotel conversion It caused major disruption to traffic in the area, with Transport for London closing parts of the Strand, the Mall and Waterloo Bridge and putting in place diversions.
The 10-storey building is being converted to a five-star hotel and 86 luxury flats to a design by Norman Foster's architectural firm.
The A4 in Aldwych was closed due to the fire, while southbound traffic on Kingsway from High Holborn was blocked.
All traffic from Waterloo Bridge is being diverted down the Strand to Trafalgar Square.
London Underground is accepting bus tickets within Zone 1, with bus routes 6, 9, 11, 13, 15, 23, 26, 76, 87 and 139 being affected