Tesco has moved its GBP90m media planning and buying account to MediaCom, ending its 20-year relationship with Initiative. The supermarket kicked off a review of its media account in March. MediaCom is understood to have beaten Initiative, M/SIX and the Publicis Groupe media agency ZenithOptimedia to the business. In January, Tesco moved its creative account into Bartle Bogle Hegarty without a pitch. The creative business was previously handled by Wieden+Kennedy.

A controversial diet supplement advertisement featuring a slender bikini-clad model has been banned by the Advertising Standards Authority because of concerns over misleading health claims. The ASA also launched an investigation into the Protein World advertisement to see whether it breaches its "harm and offence" rules. The ad, which features the model alongside the line "Are you beach body ready?," received 360 complaints from the public and was regularly defaced by commuters on London underground.

Barclays has launched a GBP100m fund for UK tech firms designed to facilitate growth in the rapidly evolving sector by firms that are unwilling to sacrifice an equity stake. Individual businesses will be offered up to GBP5m over a three-year period to invest as long as they have already secured venture capital financing, bringing the UK into line with America, which already offers similar options. British technology firms have enjoyed rapid growth in recent years, making them an attractive proposition for investors including banks.

Nielsen will begin measuring video ads on popular streaming service Roku. The partnership is proof of the growing influence that the digital video sphere has on the industry. Last year, Nielsen began gathering ad data from both Amazon and Netflix. However, this deal ensures that advertisers get more detailed audience and campaign data.