LONDON: British police said Prime Minister Boris Johnson's senior adviser Dominic Cummings may have breached coronavirus lockdown rules by driving 26 miles to a castle with his wife and son though they said they would take no further action.

Cummings, the campaigner who helped deliver the 2016 Brexit referendum win and Johnson's 2019 election landslide, has been fighting for his job after revelations about a long road trip at the height of lockdown provoked outrage across Britain.Cummings has refused to apologise for the trip, involving a 400 km trip to his parents' property in northern England and another trip to a local castle that he said he took to test his eyes and driving ability after falling ill.Durham Police said Cummings did not commit an offence by locating himself at his father's property in Durham but that the trip to Barnard Castle with his wife and son might have been a minor breach of regulations.Police said they had "concluded that there might have been a minor breach of the regulations that would have warranted police intervention."They added: "Durham Constabulary view this as minor because there was no apparent breach of social distancing."