We have a trial of the 20th Century House of Commons Parliamentary Papers until 11th November 2007. These papers cover from 1901 to the 2003/04 session.
To access this trial go to http://parlipapers.chadwyck.co.uk.ezproxy.liv.ac.uk/ (where we already have access to the 19th Century papers).
JISC Collections are considering a licensing agreement with ProQuest for the 20th Century House of Commons Parliamentary Papers. If this were to go ahead, the JISC Collections would, on behalf of the JISC community, pay for the digitised Twentieth Century House of Commons Parliamentary Papers (20C HCPP), as they have already done for the 19th Century Papers. For details of the consultation see http://www.jisc-collections.ac.uk/consultations/new_agreements/20thpp.
After using the 20th CenturyHouse of Commons Parliamentary Papers please leave a comment below.