Speaking at Magnetic’s Spark event, Millward Brown’s executive vice president of global brands, Sue Elms, said ad clutter was choking the digital environment to the detriment of effectiveness.

‘UK Traffic Taxonomy for Digital Display Advertising’ describes the different types of potential online ad fraud, and follows June’s publication of an initial set of best practices to reduce the risk of exposure to fraud.

UK and Ireland customer growth was up more than 50% year on year for the three months ended 30 September 2015 – the highest rate of Q1 growth for four years.

Murray, whose career in the client sales sector spans more than 20 years, will be responsible for ensuring that Exterion’s clients and advertisers are making the most of out-of-home within a rapidly changing media landscape.

Speaking at IAB Engage on Thursday, the company’s UK and US CEOs unveiled L.E.A.N, which has been designed to combat what they both described as the “biggest challenge” for the media industry.

The move forms part of a wider senior restructure, which will see current CEO Grant Millar become chief client officer, ZenithOptimedia Worldwide.

The level of online ad viewability in the UK rose 3% to 52% in the third quarter of 2015, according to ad verification company Meetrics; however, an estimated £1 billion a year is still spent on unseen ads.

The BBC’s director of television, Danny Cohen, is to leave the Corporation after eight years to pursue “a new leadership challenge”.

Nielsen’s Digital Ad Ratings mobile measurement has rolled out across five new countries – the UK, France, Germany, Italy and Australia – with Brazil set to launch by the end of the year.

The end of the summer Britain never had saw national newspaper circulations remain fairly static compared with August, while yearly figures continued their usual decline.