The changes do not affect Sony's mobile and PlayStation teams but focus on its electronics products, which include televisions, cameras and laptops.
They come as the company, which posted better-than-expected profits of £148m in the three months to 30 June, restructures its business globally after financially turbulent recent years.
Sony UK head of PR Lucie Speciale would not go into the impact on staff numbers of the changes, which have yet to be concluded, but pointed to the fact both teams were based in the Sony HQ in Weybridge, south west of London.
"The changes have that logistical reason, but it also makes sense that as we do more centralised campaigns the European team works on one of its main markets, rather than have the UK sat as a silo."
Amid the rejig, Sony has adjusted the agency set-up it put in place last August when it appointed three agencies – Hope&Glory, Consolidated and Margaret – to a brief formerly handled by Cake and separated press office and campaigning work.
Consolidated's work covering the press office function for Sony UK electronics has been moved to Hope&Glory which handles the campaign brief, which will continue to be shared with Margaret.
"It made sense to move the press office into one of our campaign agencies to offer something more holistic and Hope&Glory had the best set-up to take that on board," added Speciale.
The remit for Brands2Life, which works with Sony Europe, and the company’s agency for Ireland Wilson Hartnell, as well as Marlin PR, which handles its professional solutions work in the UK, remain unchanged.
Both Hope&Glory and Consolidated, which is no longer working with Sony, declined to comment.