The market saw like-for-like revenue growth surge by a huge 9.7% in the final quarter.
By discipline WPP said that advertising and media, which accounts for 38.6% of total revenue, saw like-for-like revenues fall 8.5% in 2009.
The music, DVD and books retailer saw like-for-like sales in the UK and Ireland advance 1.6% in the six months to 24 October.
The regional newspaper division saw like-for-like ad revenues fall 8% year on year - a 6% fall in January and February and 10% in March and April.
Premier Inn, which has 43,588 rooms and hotels in India, Dubai and Ireland, saw like-for-like sales rise 10.1 per cent during the half year, although this figure was comparable with a 7.5 per cent fall last year.
No reason was given for McPhail's departure, although it is thought to be connected to the disclosure two months ago that the retailer saw like-for-like sales tumble 9.1% in the 15 weeks to 8 January.
Greggs saw like-for-like sales in the 17 weeks to the end of April fall 4.4% because of the snow in January and some of the coldest March weather in 50 years.
For the year as a whole, the group saw like-for-like revenue growth of 5.3%.
For the seven weeks from 13 November to 31 December, the retailer saw like-for-like sales - which pulls out the impact of any new store openings - rise 1.1% from a year earlier.
