NORTHERN LINE: Saturday 16 November, from 0330, and all day Sunday 17 November (including Saturday Night Tube, no service between Archway and High Barnet. During Night Tube hours, please use Night Bus Route N20, or Routes 43 and 134 for Highgate. During the day, replacement bus service NL3 operates between Archway and High Barnet via Highgate, East Finchley, Finchley Central, West Finchley (Ballards Lane), Woodside Park (North Finchley High Road) and Totteridge & Whetstone (Whetstone High Road)