Major firms such as Standard Life Aberdeen and NatWest have told workers to stay home until 2021, while Barclays and HSBC have said many will not be expected back into Canary Wharf until October.
On Thursday, analysts warned that the new ban on gatherings of over six people could harm plans to get workers back to their desks by hurting confidence, even though the rules do not apply to workplaces.
Metrikus, which drew from more than 41,000 daily data points, said meeting room occupation had risen, suggesting that time in the office was being used for face-to-face meetings rather than just working at desks.
Michael Grant, chief operations officer, said: “The information we’re getting back from our sensors provides a huge amount of insight to employers keen to support their staff back into a pattern of work that delivers the best outcomes for productivity.”
Many companies are bringing people back on rotating shifts. JP Morgan last week doubled the number of investment bankers allowed to work from its Canary Offices at any one time to 50pc.
Major London businesses including Aon, Accenture, Aviva, Clyde & Co, JLL and Legal & General have teamed up to develop ideas on helping workers get back to the office safely.