"the media has suggested that Mr Cummings was in Durham on 19 April 2020. Mr Cummings denies this and Durham Constabulary have seen insufficient evidence to support this allegation"
"Had a Durham Constabulary police officer stopped Mr Cummings driving to or from Barnard Castle, the officer would have spoken to him, and, having established the facts, likely advised Mr Cummings to return to the address in Durham, providing advice on the dangers of travelling during the pandemic crisis. Had this advice been accepted by Mr Cummings, no enforcement action would have been taken."
For the first quotation, my bold.
I am fully supportive of the fact that we are all innocent until proved guilty, but 'insufficient evidence' doesn't mean that there wasn't any.
The second paragraph clearly demonstrates that if a police officer had discovered the Cummings family on their trip to Barnard Castle, his advice would have been to return to their current Durham residence. If there were no contravention of the lockdown guidance at that stage, then the officer would not need to have done that.
And with regard to 'lies' on the part of various parties, I'm still intrigued by the fact that Dominic Cummings thought it a good idea to tell his Bank Holiday audience from the Rose Garden how prescient he'd been about Coronavirus pandemics and their risks way back last year.
A lie? Sadly, yes. He has been proven to have edited his blog on the date of his return from Durham to show this, when he'd not written anything of the kind at the time.