The inner-circle of the group were six women, who hid their identities behind masks, unusual pseudonyms, and mock-Cockney communiqués. They took the following pseudonyms: Bill Stickers, Sister Agatha, Kate O'Brien The Nark, Red Biddy, The Lord Beershop of the Gladstone Islands and Mercator's Projection (The Bloody Beershop, or Is B) and Shot Biddy.
The gang was influenced by Clough Williams-Ellis's publication England and the Octopus, which denounced insensitive building and ugly development. They determined to save what they could. Their donations enabled the purchase of Shalford Mill, in Surrey, and Newtown Old Town Hall, on the Isle of Wight. They also funded the purchase of stretches of the coastline of Cornwall, Priory Cottages at Steventon in Berkshire (now Oxfordshire), and supported appeals for money to purchase land in Derbyshire, the Lake District, Devon and Wiltshire. In total they raised the sum of £4,500, the equivalent to half a million pounds in today's money.
As an example of their methods, in 1933 a fully masked Red Biddy, now known to be the developmental psychologist and peace activist Rachel Pinney, deposited a large sack of Victorian coins to the value of £100 on the Trust secretary's desk. In 1935, one of the 'gang' was interviewed by the BBC, and turned up at Broadcasting House wearing a mask.
In the words of the group's leader, Bill Stickers:
We aint so many, We aint so few,
All of us has this end in view,
National Trust to work for you.
- Polly Bagnall & Sally Beck (2015). Ferguson's Gang: The Remarkable Story of the National Trust Gangsters. Pavilion Books. ISBN 978-1909881716.
- Anna Hutton-North (2013). Ferguson's Gang - The Maidens behind the Masks. Lulu.com. pp. 2–. ISBN 978-1-291-53894-6.
- Herdman, Sue (Spring 2008). "The Cloaked Crusaders". The National Trust Magazine. The National Trust. pp. 24–27.
- Waterson, Merlin (1994). The National Trust: The First Hundred Years. London: National Trust (Enterprises) Ltd, BCA and BBC Books. ISBN 978-0-563-37066-6.
- Peter Laws (1 January 1978). A Guide to the National Trust in Devon & Cornwall. David & Charles. ISBN 978-0-7153-7581-5.
- Jenkin, Ann Trevenen (1996-12-07). "Obituary: Margaret Pollard". The Independent (London). Retrieved 2009-11-01.
- Bagnall, Polly (2012). Ferguson- Exhibition Catalogue.
- Fergusons Gang site
- Facebook page
- Photograph of members of the Ferguson Gang at Shalford Mill
- Archive photograph of three members of the Ferguson Gang enjoying a picnic in 1935
- Archive photograph of the Lord Beershop "blessing" Newtown Old Hall on the day the Ferguson Gang visited in 1935
- Ferguson's Gang: masked maidens with an excellent cause: Daily Telegraph 2008-04-02
- The secret female benefactors to the National Trust: Woman's Hour BBC Radio 4 2007-12-31 (with audio)