The report data found that spend in the first nine months of 2017 was £551m higher than the previous year, and estimated growth for 2017 as a whole to be 3.4% (to £22.1bn).

Mobile rose by 30.7% year-on-year, representing almost one in four pounds spent on advertising, and boosted by a 44.7%  increase in social media advertising.

Internet ad spend, inclusive of digital revenues for newsbrands, magazine brands, TV and radio broadcasters, grew by 9.9% from Q3 of 2016 to Q3 in 2017.

UK adspend is projected to increase by 2.8% to £22.7bn in 2018. 

Stephen Woodford, chief executive at the Advertising Association said: "UK advertising spend enjoyed a record high in the third quarter of 2017, with figures up again year-on-year. It is encouraging to see further predicted growth of 2.8% for 2018. UK advertising is vital for the economy, generating £6 for every £1 spent and we know from the work of Credos, advertising’s think tank, that advertising is the engine of growth for UK business."