London was the only prime world city to see rents fall in 2012

Rents in global prime cities have dropped a touch, says Knight Frank, although the rate of decline is slowing in the world's key financial centres...

Using its considerable research muscle to measure performance across seventeen major world cities, Knight Frank's Prime Global Rental Index recorded a 4.8% boost in 2013.

Top-end rents around the world have fallen for the third consecutive quarter, says Knight Frank, as London slips to 11th in the firm's prime rental rankings. Overall, prime rents dropped by 0.