Ministry of Justice: www.justice.gov.uk
Companies House: https://www.gov.uk/government/organisations/companies-house
Court Rules: http://www.justice.gov.uk/courts/procedure-rules/civil/rules
Land Registry: http://www.uklrs.co.uk/landregistry/?gclid=COyr3Ja20MQCFYgIwwodkzAAJw
Electoral role: https://www.gov.uk/electoral-register/overview
HMRC: https://www.gov.uk/government/organisations/hm-revenue-customs
County court claims: https://www.gov.uk/make-court-claim-for-money/going-to-court
Late payment legislation: http://www.legislation.gov.uk/ukpga/1998/20/contents
https://www.gov.uk/late-commercial-payments-interest-debt-recovery/charging-interest-commercial-debt