Have we seen the government's response to the petition on this? petition.parliament.uk/petitions/301461
It's an awful lot of waffle as usual, but this is the main excuse:
"In line with Public Health England (PHE) guidelines, it is not possible to safely include a physical British Sign Language (BSL) interpreter in the room for daily briefings as this would require additional operations staff such as an additional cameraman to be present."
Such a shame that they cannot find a bigger room. If only there were, say, a big hall or two just down the road in a big empty building like, oh, the Houses of Parliament, or a few government departmental buildings, that they could use.
Seriously, they're not even trying to produce convincing lies any more.