These are the original 14 retired bishops who signed:
The Rt Revd Dr David Atkinson, formerly Bishop of Thetford
The Rt Revd Michael Doe, formerly Bishop of Swindon
The Rt Revd Dr Timothy Ellis, formerly Bishop of Grantham
The Rt Revd David Gillett, formerly Bishop of Bolton
The Rt Revd John Gladwin, formerly Bishop of Guildford and of Chelmsford
The Rt Revd Dr Laurie Green, formerly Bishop of Bradwell
The Rt Revd the Lord Harries of Pentregarth, formerly Bishop of Oxford
The Rt Revd Stephen Lowe, formerly Bishop of Hulme
The Rt Revd Dr Stephen Platten, formerly Bishop of Wakefield
The Rt Revd John Pritchard, formerly Bishop of Oxford
The Rt Revd Dr Peter Selby, formerly Bishop of Worcester
The Rt Revd Tim Stevens, formerly Bishop of Leicester
The Rt Revd Roy Williamson, formerly Bishop of Bradford and of Southwark
The Rt Revd Martin Wharton CBE, formerly Bishop of Newcastle