A cursory search of local websites isn't showing any road closures due to flooding at the moment but I did find this which might help: http://www.environment-agency.gov.uk/homeandleisure/floods/34678.aspx?type=Region&term=Anglian
@jdp started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
A cursory search of local websites isn't showing any road closures due to flooding at the moment but I did find this which might help: http://www.environment-agency.gov.uk/homeandleisure/floods/34678.aspx?type=Region&term=Anglian