Lurdan
old wave
Government guidance changed last year. From 2015/16 CPI is to be used rather than RPI and for the next 10 years (or until it's changed again) the Guidance is to increase rents by CPI + 1%.most council rents are increased in line with a formula that goes back years, the rate of inflation the previous September, plus 1.5% (I think) and maybe the flexibility to add another £2 on top - so £4 a week is not a massive increase - especially compared to private renters when they renew their contracts
The 'up to £2 extra' has gone. It was part of 'rent convergence' which they've ended a year earlier than originally intended. Also from 2015/16 tenants earning over £60,000 can be charged full market rent (for those Councils prepared to take on the cost of determining who this applies to). And new tenancies 'should' be let at 'formula rent' (this is defined by a complicated formula set out in the guidance)
https://www.gov.uk/government/publications/guidance-on-rents-for-social-housing
This is only guidance it should be stressed - Councils can do something else. In September 2014 RPI was 2.3% whereas CPI was 1.2% implying a loss in projected revenue for most Councils. (Hence why Tower Hamlets have gone for a slightly larger increase to make up for the shortfall).