Over half of prime London lets agreed at below asking

Rents in prime London nudged up by the smallest of margins - +0.1% - in Q1, according to Savills. But that's still an improvement on last year's gentle decline; rents are now -0.

Annual rental value growth in prime central London has fallen to -0.2%, says Knight Frank, the first time the annual rate has pointed downwards since June 2014.

The summer months are traditionally the most active for the lettings market of prime London and 2015 was no exception, notes LonRes in its Autumn Review.