Hampstead and Highgate Underground Stations are open as usual this morning despite Transport for London (TfL) warning commuters they would be shut during the Tube strike.
A good service has been running on the Northern line all morning, the only Underground line to be working as normal.
Hampstead, Highgate, and Belsize Park stations, which were advertised to close, are all open with trains stopping about every five minutes.
Tufnell Park station is closed, however.
Commuters have reported that there are no queues at these stations.
A TfL spokesman said that as more staff turned up for work than expected this morning, it was able to safely open some of the stations it had planned to close during the 48-hour Tube strike, which began last night at about 9.30pm.
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