As the Conservatives go to court to prevent police investigating its South Thanet election expenses, Channel 4 News reveals fresh evidence of undeclared expenses there, and the scale of the operation.
Detailed new evidence from inside a Conservative campaign office in the key South Thanet constituency reveals the huge resources provided to this campaign.
Other documents and social media postings further reveal how staff from Conservative party headquarters were parachuted in to the constituency to help their candidate beat Farage, with many related costs not declared locally.
Channel 4 News understands that there are 18 police forces up and down the country that have been given or are seeking an extension to the time limit relating to election expenses.