By Chris Dorrell Higher earners in the public sector have seen real pay fall since the financial crisis, making it more difficult than ever for public services to hold onto their top staff, new data suggests. Research from the Institute for Fiscal Studies (IFS), shows that public sector pay at the 75th percentile – for those earning more than three-quarters of public sector workers – is now eight per cent lower in real terms than in 2007. Teachers and doctors have faced even bigger cuts. Average doctor pay last autumn was almost 15 per cent lower than in 2010, while teacher pay was around nine…