What is the name of this centre-left political party in the United Kingdom, in which Gavin Shuker serves as the Chair?
Gavin Shuker: Gavin Shuker (born 10 October 1981) is an English Labour Co-operative politician, who has been the Member of Parliament (MP) for Luton South since 2010. Gavin Shuker:  Shuker serves as Chair of the Parliamentary Co-operative Party and in 2013 he was appointed as a Shadow International Development Minister. Co-operative Party: The Co-operative Party is a centre-left political party in the United Kingdom supporting co-operative values and principles.
Co-operative Party