BT may claim it is nowhere near their capacity but everybody on my team has seen really noticeably degradation in home internet performance over the last couple of weeks (this includes people who work from home daily).
And which home internet is that? - or have your co-workers brought from one of the cheaper providers.
That is assuming the bottle neck is not caused by wifi - if there are others using the wifi spectrum kids partner, neighbours etc - that could explain it
Lots of companies do, and have had to quickly buy new license, and are finding out they don't have the network capacity to handle all their employees working from home.
