This extract from the book “Parliamentary Party Groups in European Democracies” gives information about the British parliamentary parties with regard to the following topics: formal status; historical background; current organization; cohesion; position of the individual representative; relation to the extra-parliamentary organization; relation to interest groups; and relation to government formation.

http://www.informaworld.com/smpp/146811326-36886684/title~db=all~content=t727487280