Google, Aviva, AstraZeneca and Tesco are among the 13 brands that feature on C&IT's Power 50 shortlist, revealed on Friday.
Event heads at Pfizer, Shire Pharmaceuticals, Indesit, Sainsburys, Nestle, Pricewaterhousecoopers, Barclays, Zurich and the COI, are also among the 100 most nominated names in C&IT's annual influence index.
Nominations are now closed and it's time to vote for the final 50. Which of these corporate clients do you think should make the final 50? Get voting now.
The shortlist will be live until midday on Tuesday 15 December, with the final vote to be made at an exclusive interactive launch event at Dukes in London that evening.
Want to find out who made the grade last year? See the Power 50 2008 rankings