Has Dominic Cummings got to go or be sacked over his breach of lock down?

Cummings is Boris Johnson's top adviser but despite both him and his wife showing symptoms of Covid-19 he took his wife and children 260 miles from their London home to his family home in Durham. A clear breach of the Governments own insistence that such travel was not permitted.

Cummings response is that as he and his wife both possibly had the virus he was taking his children to his family so they could look after them.

Around the time this happened I drove my 86 year old father twenty miles in to the Durham countryside from our home. Even though neither of us had symptoms we didn't get out of the car just went for a change of scenery. We were stopped by the police and told to return home as it was not acceptable to travel more than a reasonable distance from home and twenty mile was not reasonable.

How come it was not OK for us without any symptoms to go 20 miles but is OK for Cummings and his wife who both either had or suspected they had the virus to travel 260 miles.

This stinks of a government saying 'Do as we say not as we do. We make the rules and laws but they do not apply to us'.

Should Cummings step down or should Johnson sack him? Also when was Johnson made aware of Cummings actions and did he give approval?