It all seems to be back and working again now and I am seeing all GW metadata.
I am also once again seeing all 1079 GWs live in the UK including all of the Digital Catapult ones 
That seems to be the known issue that the NOC is unreliable; TTN V2 Console not working properly all the time and a more recent discussion in Gateway status not connected for a month.
If you’re using Meshed, things may be even more complicated?