Ketchum had only been working with the South Korean tech company since February on its mobile, IT, ‘brown goods' and corporate PR accounts.
The manufacturer will now operate an agency roster until the beginning of next year, when it hopes to consolidate its PR accounts into a single agency.
The major beneficiary is Firefly Communications, which has picked up most of the ex-Ketchum accounts. It will look after LG's brown goods, IT and corporate PR, and will promote the manufacturer's sponsorship deals with Arsenal and Fulham football clubs.
Firefly began working on the accounts this Monday.
Hill & Knowlton, which had already been working with LG on project work for its Chocolate mobile-phone handset, has taken on its UK mobile business until the end of the year.
Kazoo retains the account for LG's white goods, while Good Publicity continues to work on its air-conditioning brief.
‘Ultimately, we are planning to consolidate all these agency relationships into one agency to support our brand and the entire range of products within the UK in the New Year,' said LG Electronics UK PR manager Melissa Urry.
‘We are sorry to be parting company with Ketchum, with whom we've had a great relationship. It was a reluctant change on our part,' she added.
Ketchum London CEO David Gallagher said: ‘We would very much have liked to have continued working with LG but understand its point of view. We agreed to help with the handover, which we've completed.'
Gallagher declined to name the client that had triggered the conflict. But he said the agency was hoping to bag international business from the firm shortly.