The proportion of people working from home fell in the three months to September, as a loosening of Covid-19 restrictions allowed more people to return to their workplaces.
A survey by ComReg found that 34% of people were working from home every day in the third quarter - compared to 47% in April.
However households' reliance on broadband connectivity remained high, with 74% of workers saying they required a home connection to carry out work-related activities.
Meanwhile 72% believed their home broadband usage had increased since the start of the pandemic.
Three quarters of respondents said their home broadband was adequate to meet their needs - though 22% said their service had worsened since the start of the pandemic.
More than half also said they would be willing to spend more money on broadband in return for an improved service.
That may be necessary as more than a third expect to work from home for at least one day a week for the rest of the year.
One-fifth anticipate working from home every day until 2021 at least.