The Mayday mass and multifaith service saw the highest echelons of the Catholic Church in London calling for an amnesty and regularisation process for undocumented migrant workers. This call was more or less supported by leaders of Muslim, Protestant and Sikh religious groups. However, none of them expressed his endorsement in clearer terms than Jack Droomey, deputy general secretary of the TGWU. The TGWU had a large group of its members in the Cathedral, as part of the Justice for Cleaners campaign.