It varies a lot. Placements get anything from nothing to £200pw. Juniors start on anything from £12k to £15 on average.

Through-the-line agencies pay better and offer faster promotions and salary raises than above-the-line. A middle weight art director or writer after 2 years can expect up to £30k in through-the-line but may only get £20k above the line. It's hard to put any real figure on it as every agency is different, your headhunter is best placed to advise you.