The Met Office has forecast outbreaks of snow for London to continue throughout the day, bringing further disruption to the evening rush hour.
Snow could be up to 15cm in places in London by the end of the day and Transport for London and the Highways Agency are advising Londoners to avoid travel if possible.
Cllr Danny Chalkley, Westminster’s Cabinet Member for the Street Environment and Transport said this 300 tonnes of gritting salt had already been spread around west London's roads, adding: “These are extraordinary weather conditions, but we have deployed 120 staff and seven gritting machines to help keep central London moving.
“We put our cold weather plan into operation as soon as we recognised that severe weather was likely. Over 100 staff have been gritting main roads and pavements since 10am on Sunday. They worked overnight and we have one gritting machine for every square mile of Westminster."
Westminster Council has also suspended parking enforcement.
Many west London schools are closed for the day:
All of Westminster's 50 schools are closed apart from St George's Hanover Square and St Mary's Bryanston Square CE School. Unless the weather improves staff are also advising parents to keep their children at home tomorrow. Parents should check the council's website for updates on school closures.
Updates on www.westminster.gov.uk during the day
Hammersmith and Fulham
A council spokesman said that due to extreme weather conditions, the majority of the borough's schools are shut.
He advised parents and carers to ask individual schools for advice or go to the schools' websites where there may be updates during the day.
Refuse collections have also been suspended today due to the snow.
Visit www.lbhf.gov.uk fir updates during the day.
Kensington and Chelsea
A spokeswoman advised parents and carers to contact individual schools to see if they are open.
They hope to have more information later today. Go to www.rbkc.gov.uk for updates.
The Met police say patrols and staffing levels have not been affected.
A spokeswoman said there are no reports of fatal accidents as a result of the severe weather, adding: "We have contingency plans which could be put into place should the need arise.
Some bus routes now have a limited service:
Routes 6 9 16 19 20 21 23 34 36 59 60 76 79 83 92 94 98 109 113 115 117 126 136 140 155 159 160 162 164 171 182 186 208 219 233 237 266 286 370 427 428 492 607 E8 RV1 U4
Route 6 Limited service
Route 9 Limited service between Hammersmith and Hyde Park Corner.
Route 16 Limited service
Route 19 Limited service between Battersea Bridge and Piccadilly Circus
Route 20 Limited service between Walthamstow and Woodford Green (Castle) only
Route 21 Limited service
Route 23 Limited service between Westbourne Park and Aldwych.
Route 32 Limited service between Cricklewood Broadway and Edgware
Route 34 Limited service between Walthamstow and Edmonton (Cambridge)
Route 36 Limited service
Route 59 Limited service between Streatham Hill and Aldwych.
Route 60 Limited service between Purley Cross and Croydon Town Centre
Route 76 Limited service
Route 79 Limited service
Route 83 Limited service between Ealing Hospital and Wembley Park (Brent Town Hall).
Route 92 Limited service
Route 94 Limited service between Shepherds Bush and Piccadilly Circus
Route 98 Limited service
Route 109 Limited service between Brixton and Thornton Heath Pond
Route 113 Limited service
Route 115 Limited service
Route 117 Limited service
Route 126 Limited service
Route 136 Limited service
Route 140 Limited service
Route 155 Limited service between Stockwell and Colliers Wood Station
Route 159 Limited service between Streatham and County Hall.
Route 160 Limited service
Route 162 Limited service
Route 164 Limited service between Wimbledon and Rose Hill.
Route 171 Limited service
Route 182 Limited service between Harrow Weald and Sudbury & Harrow Road Station
Route 186 Limited service between Edgware Station and Harrow Bus Station
Route 208 Limited service
Route 219 Limited service between Wimbledon and Wandsworth Common.
Route 233 Limited service
Route 237 Limited service
Route 242 Limited service between Hackney Central and Tottenham Court Road
Route 253 Limited service between Hackney Central and Camden Town
Route 254 Limited service between Holloway Nags Head and Hackney Central
Route 256 Limited service
Route 266 Limited service between Brent Cross and Harlesden Jubilee Clock.
Route 286 Limited service between Sidcup and Blackheath (Royal Standard) only
Route 370 Limited service
Route 427 Full service
Route 492 Limited service
Route 607 Limited service between Uxbridge and Acton Vale (Bromyard Avenue)
Route E8 Limited service
Route RV1 Full service
Route U4 Limited service between Uxbridge and Hayes and Harlington Station.