Chime Online's operations retained the top place with fee income of £10.2m - four per cent down on last year - after a new-business drive partially counteracted the effects of a slow market.
The firm - which includes Harvard PR, Insight Marketing and Communications and 20 per cent of Interactive Bureau - remained more than £2.3m ahead of second-placed Hill & Knowlton as a result.
The UK's largest agency - Weber Shandwick - dropped one place to third with more than £7.8m in tech income, showing a slump of 15 per cent from its tech brands Miller/ Shandwick Technologies and The Weber Group, as well from WS tech clients.
Double-figure income declines, however, plagued a high proportion of firms in the table.
League tables, p11/Leader, p8.