Struggling to find a straight answer to this. For example, I know that indoor mixing is against the law in tiers 2 and 3 except for support bubbles, caring etc. And that it is against the law for hospitality to be open in tier 3, or to have a wedding with 50 people. But for example with travel from tier 3 to tier 2, is says it is "advised against". I don't know whether than means it is illegal or not.
BTW this is not me trying to circumvent the rules but I honestly don't know right now what is actually not permitted in law vs what is merely "guidance". Anyone else?