Global adspend will grow by 5.8% to $391.01bn, the agency鈥檚 annual report predicted.
For the first time in five years, none of the 56 worldwide markets surveyed by Initiative are expected to see a decline in ad expenditure.
Asia is expected to overtake Western Europe as the second largest advertising region this year, with a 23.3% share compared to Europe鈥檚 22.7%.
In the UK, online spending is forecast rise by 26.3% to $1.34bn, taking fifth place from radio, which will rise 1.3% to $1.17bn.
TV will remain the top medium, with a 3.1% rise to $7.77bn, ahead of press, which will drop 0.3% to $6.06bn, and outdoor, up 6.3% to $1.78bn.
Cinema will be up by 5% to $295,189.
The US, the world's largest market ahead of Japan and China, is predicted to grow 4.5% to $160.93bn. Its growth will also be fuelled by a surge in online ad spend, up 31.1% to $17.12bn.
For the first time in five years, none of the 56 worldwide markets surveyed by Initiative are expected to see a decline in ad expenditure.
Asia is expected to overtake Western Europe as the second largest advertising region this year, with a 23.3% share compared to Europe鈥檚 22.7%.
In the UK, online spending is forecast rise by 26.3% to $1.34bn, taking fifth place from radio, which will rise 1.3% to $1.17bn.
TV will remain the top medium, with a 3.1% rise to $7.77bn, ahead of press, which will drop 0.3% to $6.06bn, and outdoor, up 6.3% to $1.78bn.
Cinema will be up by 5% to $295,189.
The US, the world's largest market ahead of Japan and China, is predicted to grow 4.5% to $160.93bn. Its growth will also be fuelled by a surge in online ad spend, up 31.1% to $17.12bn.