According to CBRE’s EMEA Rents and Yields Marketview, prime office rents in the West End of London were GBP117.5 per square foot per annum in 1Q15, or 11.9% more relative to 1Q14. Rents have risen 46.9% from their lows in the wake of the 2008/09 global financial crisis.  Prime office yields are 3.65%, down 185 basis points from their highest levels since the crisis.

Source : May 2015/CBRE/London/OFF