Some motorists trapped overnight were caught in treacherous conditions on the M23 in Sussex and on the A23 in Kent
Here are the details of some of the roadworks planned in the South for the coming week.
Ryanair should have compensated passengers whose flights were cancelled because of volcanic ash in 2010, the EU's top court has found.
One lane closed due to broken down vehicle on M4 Westbound at J7 A4 (Slough West).
One lane closed due to broken down vehicle on M40 Northbound between J9 A34 / A41 (Bicester) and J10 A43 (Brackley / Cherwell Valley Services).
Delays of up to 40 minutes on South West Trains between Weymouth and Bournemouth due to broken down train at Poole.
A340 Paices Hill both ways blocked, delays due to accident between The Street (Aldermaston) and B3051 / Heath End Road (Baughurst).
One lane closed and queueing traffic due to accident on M25 clockwise between J5 M26 / A21 and J6 A22 / B2235 (Godstone), congestion to J4 A21 / A224 (Orpington).
Two lanes closed due to broken down lorry on M3 Southbound between J11 A3090 / B3335 (Winchester South) and J12 A335 (Eastleigh).
Slow traffic and road blocked due to overturned vehicle on A2 Westbound at A2050. The accident happened at around 08:15 involving two vehicles, one which is overturned just east of Canterbury.
The A1306 Arterial Road West Thurrock Eastbound partially blocked, queueing traffic due to accident, two vehicles involved at M25 J31 / A282 Dartford River Crossing. Near to the M25 roundabout.
One lane blocked and slow traffic due to overturned car on M25 anticlockwise between Clacket Lane Services and J5 M26 / A21.
Reports of M40 Southbound lane blocked on exit slip road due to broken down lorry at J10 A43 (Brackley / Cherwell Valley Services).