Fog and low visibility is affecting flights to / from London Gatwick Airport. Arriving and departing aircraft are being regulated by Air Traffic Control due to the weather conditions over London and Southern England. This is causing delays to some flights.
Passengers are advised to check before travelling.
The M4 London bound is closed. There are long delays due to a fuel spill in Chiswick between J3 A312 (Hayes) and J1 A4 / A205 / A406 ( Chiswick Roundabout).
There is congestion to J4b (M25). Traffic coming into London is being diverted, with the A4 closed in both directions in Chiswick at the Hogarth Roundabout after a large fuel spill.
It is estimated the M4 will be reopened at around midday.
Overnight works have overrun at the Dartford Tunnel. There is queueing traffic and there are intermittent lane closures on the M25 anticlockwise at the Dartford Tunnel.
There is congestion on the M25 to J2 A2 (Darenth Interchange). There are also the usual restrictions to prevent queues inside the tunnels with ongoing A13 works at J30.
The M4 London bound is blocked due to an accident and recovery work between J8/9 A404(M) / A308M Maidenhead and J7 A4 ( Slough West).
There is congestion on the M4 to J10 A329(M) Wokingham / Bracknell. Traffic has been stopped to recover vehicles.
There have been two accidents on the A3. One lane is blocked and there is very slow traffic due on A3 Northbound between A31 Farnham Road (Hogs Back) and Egerton Road (Cathedral Turn).
There is congestion to the A283 / B3001 Elstead Road. Initially there was just one minor accident that had blocked a lane prior to the Cathedral Turn, but a little further behind it, two other couple of vehicles also collided.
Six million pounds of work to improve the rail line in Hampshire got underway today at Fareham in Hampshire.
The works mean disruption for thousands of passengers for nine days. However, Network Rail has said it will be worth it, because the changes will make the service better and more reliable. Our Transport Correspondent Mike Pearse reports.
The interviewees are Suella Fernandes, the MP for Fareham; and Owen Jones from Network Rail.
£4.6 million pounds is being spent on a major railway track renewal project at Fareham in Hampshire. Network Rail says the work should make a better, more reliable railway system for the area.
Nine sets of points are being replaced, as are the crossings which allow trains to move between lines, 240 metres of track are also being replaced.
The town's railway station is also being upgraded for an additional £1 million investment being jointly invested by Network Rail and Hampshire county Council. Today the Fareham MP, Suella Fernandes - and Hampshire County Councillor Seán Woodward visited the site to see work on the project start.
Passengers are being advised to check on their routes before leaving home. There are replacement buses in place. Check below for changes to timetables.
You can also visit South West Trains for more information about the closure and the disruption.
Hundreds of rail engineers will spend the next week replacing nine sets of points and track at Fareham railway station in Hampshire. The station will get a big upgrade costing about £1 million pounds.
For passengers buses are replacing many trains between Southampton and Portsmouth.
Thousands of rail passengers are facing nine days of disruption from Saturday while an important junction on the South Coast line is renewed.
Industrial action by workers at Southern Rail has brought chaos to the journeys and lives of train passengers who use the company's routes and services over the past few months. Passengers have been forced to find other means of transport.
This report is from our Transport Correspondent Mike Pearse.