MOTORISTS are being warned to be extra vigilant after the Met Office predicted Suffolk and Essex will wake to thick fog on Thursday morning.

It is expected to lead to flight cancellations and cause rush-hour problems on roads.

The fog is forecast to descend overnight and remain in parts of the country up until the weekend, before slowly clearing.

The AA has told drivers to cut speeds and take extra care.

Temperatures will drop to 10C (50F) after 16C (61F) highs earlier in the week.