Which group did DJ Fatboy Slim join as bassist in 1985?

Norman Quentin Cook (born Quentin Leo Cook; 31 July 1963), known by his stage name Fatboy Slim, is an English DJ, musician, and record producer who helped to popularise the big beat genre in the 1990s. In the 1980s, Cook was the bassist for the Hull-based indie rock band The Housemartins, who achieved a UK number-one single with their a cappella cover of "Caravan of Love". After the Housemartins split, Norman Cook formed the electronic band Beats International in Brighton, who produced the number-one single "Dub Be Good to Me". Cook joined acts including Freak Power, Pizzaman, and the Mighty Dub Katz to moderate success.

In 1985, Cook's friend Paul Heaton had formed a band called The Housemartins. Their bassist left on the eve of their first national tour, so Cook agreed to move to Hull to join them. The band soon had a hit single with "Happy Hour", and their two albums, "London 0 Hull 4" and "The People Who Grinned Themselves to Death", peaked in the Top 10 of the UK Albums Chart.