St Mary's Church, Newmarket hosts and runs various social and community projects and events, including the Newmarket Jigsaw Festival and the British Jigsaw Championships. These may be in association with other groups such as Churches Together in Newmarket and District or the Newmarket Inter-Faith Forum. In the case of any such event, there is no requirement that those attending have any particular faith themselves, but should accept that those organising the events hold their own religious beliefs.