He didn’t break the rules, they clearly allowed anyone to seek help if they needed it. None of us know the degree of symptoms they had, or what other health issues they might have. Maybe they were scared they couldn’t manage? All valid reasons to seek help
He was afraid neither of them was well enough to care for their child yet were well enough to drive 260 miles. OK.
He wasn’t in contact with anyone at any point, thus couldn’t have spread anything
He left his wife, who he suspected of having Covid looking after their child alone and returned to work. The wife who was too ill to parent. He mixed with his colleagues at no 10.
For a 4 year old to need a wee during a car drive is hardly uncommon
Indeed, yet he didn’t need one on the 260 mile journey to Durham ...
Taking a test drive because you’ve been very unwell to see how you fare before a long drive seems pretty reasonable to me ( as someone who used to live hours away from the nearest help as a single mum and someone who has medical conditions which mean flu can and does floor me. I’m not risking my child finds me unconscious on the floor - yes it’s happened but thankfully I’d had the foresight to get to help 2 days before hand)
So you care so much about your child yet risk him on a journey when you’re not sure you can drive safely. When your wife can drive so you don’t need to.