Check your Pension Credit allowance
http://www.direct.gov.uk/en/Pensionsandretirementplanning/PensionCredit/DG_180167
Buy a fishing licence
http://www.environment-agency.gov.uk/homeandleisure/recreation/fishing/31497.aspx
View raw goverment data
http://data.gov.uk/
Government legislation
http://www.legislation.gov.uk/
On guard, on-line
http://www.onguardonline.gov/
Department of Education
http://www.education.gov.uk/
Universal Credit
https://www.gov.uk/universal-credit