Here's your Monday-morning update to jump-start the working week.

Weather

The sun is back and will continue to shine all day, with highs of 20C.

Train and tube 

The London Overground has minor delays on routes from Highbury and Islington to West Croydon, Crystal Palace, Clapham Junction and New Cross.

There are minor delays on Thameslinks on the St Albans, Mitcham and Sutton line, but other Thameslink, East Midlands and Southern rail routes are operating normally.

Traffic

There is traffic on the M25 anticlockwise at Potters Bar and Waltham Abbey.

The A1 also has increasing delays southbound leading up to Stirling Corner, and at Watford Way in Mill Hill.

There are severe delays on the A406 westbound in New Southgate, which are also increasing.