Hansard is the record of what is said in Parliament. There are separate editions for the House of Commons and the House of Lords.
Editions since 2010 can be searched for at https://hansard.parliament.uk.
The House of Commons Hansard can be searched for by date from November 1988 to March 2016 via http://www.parliament.uk/business/publications/hansard/commons/by-date/ and the Lords via http://www.parliament.uk/business/publications/hansard/lords/
If you want to go back further (and I've enjoyed some interesting reading through this site) then visit http://hansard.millbanksystems.com. This covers the period 1803 to 2005.