Tesco has launched a closed review of its media planning and buying business, which has been handled by Initiative for more than 20 years. The review is believed to involve the GBP90 million account in the UK. It is not known if it includes the €15 million of billings in Ireland. Half of Initiative’s business is tied up in Tesco. The closed process is moving quickly, with agencies given until the end of March to complete the first submission. As the UK’s biggest media agency with no direct conflict, MediaCom is an obvious contender.