This trial would not have been possible without the enthusiasm and commitment of clinicians, nurses and patients throughout the UK and Eire. Full details of recruiting centres are listed below under contributors. The trial has been developed and continues to be supported by the UK Dermatology Clinical Trials Network ; a collaborative group of clinicians, nurses, researchers and patients with an interest in the treatment and prevention of skin disease. Additional nursing support is being been provided by the NIHR Comprehensive Local Research Networks . The trial is being managed through the Nottingham Clinical Trials Unit  and sponsored by Nottingham University Hospitals NHS Trust.
Trial management group
FFC, KST, EJM, HCW, JN, JMM, ADO, plus Nicola Greenlaw (statistician, University of Glasgow), Diane Whitham (Deputy Director, Nottingham CTU), Daniel Simpkins (Senior Data Manager, Nottingham CTU), Katharine Foster (STOP GAP Trial Manager, maternity leave cover), Julie Barnes (STOP GAP administrator), Sally Kucyj (Trial Administrator).
Trial steering committee
Independent Chair: Frank Powell (Mater Private Hosp, Dublin), Sarah Meredith, (MRC CTU), Daniel Wallach (Hôpital Tarnier, Paris), Paul Mussell (patient representative, York).
Data monitoring committee
Chair: Julia Schofield (University of Hertfordshire), Angela Crook (MRC CTU), Alison McDonald (CHaRT, Aberdeen), Ian Ford (for preparation of unblinded reports to the DMC, Robertson Centre for Biostatistics).
Aberdeen Royal Infirmary, NHS Grampian: Dr Anthony Ormerod (PI), Dr Fiona Craig, Linda Lawson; Aneurin Bevan Health Board: Professor Alex Anstey (PI), Catherine Watkins, Sarah Mitchell, Dr Richard Goodwin, Cilla Benge; Barts & The London NHS Trust: Dr Frances Lawlor (PI); Basildon & Thurrock University Hospitals NHS Foundation Trust: Dr Malgorzata Skibinska (PI), Dr N Ariffin, Janice Armitt, Nhlanhla Mguni, Maxwell Masuku, Kerry Goodsell, Linda Johnson; Betsi Cadwaladr University Health Board: Dr Diane Williamson (PI), Dr Richard Williams, Dr Ewa Turczanska, Dr Alison Devine, Angela Steen, Val Loftus, Corrina Marsden; Cardiff & Vale University Health Board: Dr John Ingram (PI), Dr Girish Patel, Dr Mabs Chowdhury, Dr Richard Motley, Anne Thomas, Dr Colin Long, Dr Andrew Morris, Prof Vincent Piguet, Dr Manju Kalavala, Dr Ru Katugampla; Bradford Teaching Hospitals NHS Foundation Trust: Dr Andrew Wright (PI), Jenny Ott; Brighton & Sussex University Hospitals NHS Trust: Dr Paul Farrant (PI), Mary Flowerdew, Wendy Harman, Dr Lindsay Atkinson, Dr Jessie Felton, Dr Claudia deGiovanni; Cambridge University Hospitals NHS Foundation Trust: Dr Jane Sterling (PI), Dr Moumita Chattopadhyay, Dr Galia Ben-Zvi, Dr Shaheen Haque-Hussain; Chesterfield Royal Hospital NHS Foundation Trust: Dr Francisca Ezughah (PI), Dr Graham Colver, Amanda Whileman, Amanda Gascoigne; City Hospitals Sunderland NHS Foundation Trust: Dr Catherine Blasdale (PI), Dr Stephanie Lateo, Dr Neil Rajan, Anne Thomson, Sivakumar Natarajan; Cork University Hospitals: Dr Johnny Bourke (PI), Dr Maeve McAleer; Countess of Chester Hospital NHS Foundation Trust: Dr Asad Salim (PI), Helen Doyle; County Durham & Darlington NHS Foundation Trust: Dr Shyamal Wahie (PI), Dr Therese Sripathy, Dr Maneesha Vatve, Dr Vrinda Bajaj, Anne Thomson, Dr Keith Freeman, Dr Mary Carr; Craigavon Area Hospital Southern Health & Social Care Trust: Dr Rosemary Black (PI), Dr David Eedy; Derby Hospitals NHS Foundation Trust: Dr Adam Ferguson (PI), Katherine Riches; East Kent Hospitals University NHS Foundation Trust: Dr Emilia Duarte-Williamson (PI), Dr Claire Fuller, Anthea Potter, Laura Brockway, Dr Susannah Baron, Dr Ashley Cooper, Susan Thompson; East Sussex Hospitals NHS Trust: Dr Mahmud Ali (PI), Emma Edmunds; Frimley Park Hospital NHS Foundation Trust: Dr Fiona Antony (PI), Stephanie Atkinson, Lisa Moore, Jean Herzke; Great Western Hospitals NHS Foundation Trust: Dr Sam Gibbs (PI), Dr Deirdre Buckley, Dr Lindsay Whittam, Dr Hartmut Hempel, Dr Mohamed Alrawi, Sue Toft, Jayne Gingell, Jacqueline Arnold; Guys' & St Thomas' NHS Foundation Trust: Dr Catherine Smith (PI), Gemma Minifie, Naomi Hare, Kate Thornberry, Dr Shika Gupta, Dr Sinead Langan; Harrogate & District NHS Foundation Trust: Dr Alison Layton (PI), Angela Wray, Dr Benjamin Walker, Gayle Law, Elizabeth Marshall; Hull & East Yorkshire Hospitals NHS Trust: Dr Shernaz Walton (PI), Katherine Ashton, Angela Oswald, Dr Deborah Graham, Peter Jones, Dr Vanessa Smith; Hywel Dda Health Board: Dr Debbie Shipley (PI), Claire Duggan, Sarah Jones, Carol Thomas, Sally-Ann Rolls, Dr Emma Veysey; James Paget University Hospitals NHS Foundation Trust: Dr Robert Graham (PI), Dr Ingrid Salvary, Susan Simmons; Newcastle Upon Tyne Hospitals NHS Foundation Trust: Dr Simon Meggitt (PI); NHS Lanarkshire Monklands Hospital: Dr Christopher Evans (PI), Suzanne Clements, Gayle Moreland, Margaret Nisbet; Norfolk & Norwich University Hospitals NHS Foundation Trust: Dr Nick Levell (PI), Dr Kevin Lee, Dr Pariyawan Rakvit, Dr George Millington, Karen Banks-Dunnell, Dr Natasha Chetty, Dr Clive Grattan, Dr Syed Shah, Donna Butcher; North Cumbria University Hospitals NHS Trust: Dr Marinela Nik (PI), Kathleen Gilbanks, Dr Neil Cox; Northern Devon Healthcare NHS Trust: Dr Karen Davies (PI), Nick Lawton; Nottingham University Hospitals NHS Trust: Dr John English (PI), Dr Ruth Murphy, Dr William Perkins, Professor Hywel Williams, Dr Sheelagh Littlewood, Dr Jan Bong, Dr Moona Malik, Dr Jonathan Batchelor, Dr Catriona Wootton, Sue Davies-Jones, Joanne Llewellyn, Dr Suzanne Cheng, Dr Maulina Sharma, Dr Janet Angus, Dr Sandeep Varma, Dr Stuart Cohen; Oxford University Hospitals NHS Trust: Dr Graham Ogg (PI), Dr Susan Burge, Dr Vanessa Venning, Dr Susan Cooper, Dr Tess McPherson, Lisa Matter, Gwendoline Reeves; Raigmore Hospital, NHS Highland: Dr James Vestey (PI), Paula Martin, Sue Ross, Charlotte Barr; Royal Berkshire NHS Foundation Trust: Dr Daron Seukeran (PI), Jennie King, Dr Janet Dua, Karen Wilmott; Royal Devon & Exeter NHS Foundation Trust: Dr Christopher Bower (PI), Robert James; South London Healthcare NHS Trust: Dr Anna Chapman (PI), Dr Natalie Miller, Dr Yana Estfan; Taunton & Somerset NHS Foundation Trust: Dr Rachel Wachsmuth (PI), Dr Victoria Lewis; Sandwell & West Birmingham Hospitals NHS Trust: Dr Shireen Velangi (PI), Dr Weronika Szczecinska, Tinomuda Shumba; Sherwood Forest Hospitals NHS Foundation Trust: Dr Jane Ravenscroft (PI), Dr John English, Dr Jan Bong, Dr Azaharry Yaakub, Dr Hong Trinh; South Devon Healthcare NHS Foundation Trust: Dr Alison Clegg (PI), Dr Jill Adams, Sarah Burns, Dr Tessa Frost; The Royal Liverpool & Broadgreen University Hospitals NHS Trust: Dr Hazel Bell (PI), Dr Richard Azurdia, Dr Maeve Walsh, Dr Caroline Angit, Dr Kok Ngan, Andrea Young, Julie Murgaza, Paula Taylor, Dr Hamish Hunter; University Hospitals Birmingham NHS Foundation Trust: Dr Agustin Martin-Clavijo (PI), Dr Renuga Raghavendran, Dr Lucy Evriviades, Dr Helen Lewis; University Hospitals Bristol NHS Foundation Trust: Dr Giles Dunnill (PI), Dr Adam Bray, Dr David De Berker; University Hospitals of Leicester NHS Trust: Dr Graham Johnston (PI), Dr John McKenna, Catherine Shelley, Dr Mohammad Ghazavi, Alison Hill; Weston Area Health NHS Trust: Dr Margaret Kirkup (PI), Glenn Saunders, Hugh Lloyd-Jones, Dawn Simmons, Donna Cotterill; Whipps Cross University Hospital NHS Trust: Dr Anthony Bewley (PI), Michael Galivo, Jane Watts, Dr Karen Gibbon, Dr Anshoo Sahota; Yeovil District Hospital NHS Foundation Trust: Dr Rachel Wachsmuth (PI), Michelle Davey; York Teaching Hospital NHS Foundation Trust: Dr Calum Lyon (PI), Jill Green, Dr Julia Stainforth.
This paper presents independent research commissioned by the National Institute for Health Research (NIHR) under its Programme Grants for Applied Research funding scheme (RP-PG-0407-10177). Pilot work for the STOP GAP trial was funded by the British Skin Foundation (grant reference: S317).