The Nature of the British Constitution

The Ministry of Justice is the Government department in charge of constitutional affairs:
http://www.justice.gov.uk/

Information about the Lord Chancellor may be found here:
http://www.parliament.uk/about/mps-and-lords/principal/lord-chancellor/

The UK Supreme Court website is available at:
http://www.supremecourt.uk/

For the British Bill of Rights Commission, see:
https://www.justice.gov.uk/about/cbr

For a copy of Professor David Feldman's Written evidence to the Parliamentary Joint Select Committee on the Draft Constitutional Renewal Bill, published on the Internet at:
http://www.publications.parliament.uk/pa/jt200708/jtselect/jtconren/memo/551/ucm6602.htm