Was just coming on to post about this, so glad it's been picked up already.
And for those doubting, this was from the PHE at the House of Commons Science and Tech committee this morning, it's not random rantings - lots of chatter on Twitter from political journalists to verify.
e.g.
twitter.com/adamfleming/status/1242827523991449606
This really should have been ramped up previously, but glad it's coming about, having an at home kit will make a big difference to allow the population dynamics to be better understood and also get those back into society who we need.