Overall, the Conservatives spent £18.6 million before the snap election on June 8, in which they lost 13 seats. That was close to the national limit of £19.5 million, and more than the next two parties combined. Labour spent £11 million and the Liberal Democrats spent £6.8 million.

The Tories spent £2.1 million on Facebook ads during the campaign - more than Labour, who spent £577,270 and the Lib Dems, who spent £412,329, combined.