[4] She was the Chair of the Nottingham and Derby District of the Methodist Church,[5] having been formally appointed to that position on 1 September 2010.
[6] In May 2022 she took up the appointment of Chair of the Cornwall and the Isles of Scilly Methodist District, succeeding Steve Wild.
[7] As Chair of the Nottingham and Derby District, Mellor has oversight of an area covering the south of both Derbyshire and Nottinghamshire, as well as parts of Leicestershire, Lincolnshire and Staffordshire.
[8] In February 2014, she joined 27 Anglican bishops and other clergy in signing an open letter to Prime Minister David Cameron, criticising his government's welfare reforms.
[11] Addressing the Methodist Conference, Mellor expressed regret over the declining membership of the church.