DH supports one of our friend's with a disabled family member who lives with them. He was there today watching football - ok so far. Friend's adult DC (doesn't live there) turns up with another friend and they all have a drink together and watch the match.
Only told me before when he made a joke about telling the DC not to put anything on SM about them all being in the same house. He couldn't understand why I said he should have left.
This isn't about the 'rules' but about the risk of 4 households mixing in tier 3 area where transmission is out of control. Needless to say it led to an argument because 'we all have to take each other at their word' about whether we have been taking risks or not 
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Am I just being a crank or does this seem like unnecessary risk to anyone else too?