
The £211m spent on advertising, including press and TV campaigns, represented an uplift of 35% year on year. But media spend continued to decline as a proportion of the COI's overall turnover, according to the Government.
During the period, the COI undertook high-profile campaigns tackling issues such as obesity, smoking, road safety and climate change.
The COI said the increases had "been driven by departments taking greater advantage of the COI's centralised buying position and expertise, and the growing need for government to effectively communicate important information to the public".
All areas of marketing and ad spend were up, except for sponsorship, which dipped from £11.9m to £9.5m in the period.
Spend on non-media, made up of production costs and fixed fees to agencies, almost doubled, from £10.7m to £21.1m. Spend on digital media enjoyed a marked increase from £21.7m to £30m in the period.
Mark Lund, chief executive of the COI, said: "The need for government to communicate with the public is greater than ever as society faces challenges such as obesity, climate change and the recession.
"Government campaigns can help save lives and save money. Smoking rates and road deaths are now the lowest on record. The online tax returns campaigns generated savings of £547m."