Works are planned from junctions 10 to 12 on the anti-clockwise route, with multiple lanes from closed from 9pm tonight until 10am on Sunday May 22. Junction 11 of the M25 will be closed from midnight tonight for a complete 24 hours. Overnight roadworks are also scheduled to take place on the clockwise route between junctions 9, 10 and 11 from 10pm tonight until 5am tomorrow. The M23 and the A303 will also be part-closed for roadworks from 8pm tonight until 6am tomorrow. M25 anti-clockwise closures (9pm May 21 - 10am May 22): Within J10: All lanes closed Between J11 and J10: Three of four lanes closed. Slip-road access at J11: All two lanes closed. Within J11: All lanes closed between midnight and 23.59pm on May 22. Between J12 and J11: Three of four lanes closed. M25 clockwise closures (9pm May 21 - 10am May 22): Within J10: Two of three lanes closed. Between J10 and J11: Two of four lanes closed. Between J9 and J10: Two of four lanes closed. A303 westbound between A3093 and A3057 (8pm May 21 - 6am May 22): One of two lanes closed. M23 southbound closures (8pm May 21 - 6am May 22): Within J11: All lanes closed. Between J11 and J10A: All lanes closed.