Drivers in and around Hertsmere will have six National Highways road closures to watch out for this week.

Two of them are expected to cause delays of between 10 and 30 minutes.

The latest expected works list, with notes from National Highways, shows that six closures are due to start over the next two weeks:

• M25, from 10pm January 16 to 5am January 17, slight delays (under 10 minutes): M25 clockwise, junction 23 to junction 24, Lane closure for CAT1 barrier repairs.

• M25, from 10pm January 17 to 5am January 18, slight delays (under 10 minutes): M25 clockwise, junction 22 to junction 24, Lane closure, for speed / red x enforcement camera maintenance.

• A1, from 10pm January 17 to 5am January 18, slight delays (under 10 minutes): A1 northbound, junction A5135 to junction M25, Lane closure for electrical works.

• M25, from 11pm January 19 to 5am January 20, slight delays (under 10 minutes): M25 clockwise, junction 23 to junction 24, Lane closures for boundary fence repairs.

• M1, from 10pm January 22 to 6am January 27, moderate delays (10-30 minutes): M1 southbound, junction 4 slip road, slip road closure for resurfacing works, diversion via Local Authorities roads.

• M25, from 10pm January 29 to 5am February 3, moderate delays (10-30 minutes): M25 anti clockwise, junction 25 to junction 24, Lane closures and slip road closure for PRS Investigation works, diversion via National Highways roads.

National Highways is responsible for maintaining motorways and major A-roads, so closures of smaller roads will not be included in their schedule.