| Site | Site Name | Date Opened | Total Infants Recruited | 
| 1 | The Royal Derby Hospital, Derby | Oct-19 | 110 | 
| 2 | Birmingham Women’s Hospital, Birmingham | Dec-19 | 76 | 
| 3 | Bradford Royal Infirmary, Bradford | Dec-19 | 33 | 
| 4 | Liverpool Women’s Hospital, Liverpool | Dec-19 | 96 | 
| 5 | Glan Clwyd Hospital, Wales | Sep-20 | 51 | 
| 6 | Princess Anne Hospital, Southampton | Nov-19 | 68 | 
| 7 | Queen Alexandra Hospital, Portsmouth | Nov-19 | 120 | 
| 8 | Royal Victoria Infirmary, Newcastle | Oct-19 | 33 | 
| 9 | St George’s Hospital, London | Dec-19 | 39 | 
| 10 | St Peter’s Hospital, Surrey | Sep-20 | 59 | 
| 11 | William Harvey Hospital, Ashford | Dec-19 | 39 | 
| 12 | Arrowe Park Hospital, Wirral | Nov-19 | 32 | 
| 13  | Heartlands Hospital, Birmingham | Jun-21 | 38 | 
| 14 | Chelsea and Westminster Hospital, London | Dec-19 | 42 | 
| 15 | Imperial College Healthcare, London | Feb-20 | 106 | 
| 16 | Hull Royal Infirmary, Hull | Nov-19 | 37 | 
| 17 | James Cook University Hospital, Middlesbrough | Dec-19 | 44 | 
| 18 | John Radcliffe Hospital, Oxford | Dec-19 | 46 | 
| 19 | Leeds Teaching Hospital, Leeds | Jan-20 | 54 | 
| 20 | Nottingham City Hospital | Aug-21 | 30 | 
| 21 | Queen's Medical Centre, Nottingham | Aug-21 | 31 | 
| 22 | Leicester Royal Infirmary, Leicester | Nov-19 | 118 | 
| 23 | Royal Devon and Exeter Hospital, Exeter | Nov-20 | 52 | 
| 24 | Ninewells Hospital, Dundee | Nov-20 |  7 | 
| 25 | Victoria Hospital, Kirkcaldy, Scotland | Feb-20 | 20 | 
| 26 | Sunderland Royal Hospital | May-21 | 20 | 
| 27 | Southmead Hospital, Bristol | May-21 | 61 | 
| 28 | Luton and Dunstable University Hospital, Luton | Sep-20 | 63 | 
| 29 | Princess Royal Maternity Hospital, Glasgow | Apr-21 | 63 | 
| 30 | Singleton Hospital, Swansea | May-20 | 63 | 
| 31 | Royal Hospital for Children, Glasgow | Apr-21 | 32 | 
| 32 | Royal Oldham Hospital | Nov-20 |  6 | 
| 36 | Lister Hospital, Stevenage | Jun-21 | 108 | 
| 38 | University Hospital of Wishaw | Feb-21 | 51 | 
| 39 | Watford General Hospital | Apr-21 | 56 | 
| 40 | Northwick Park Hospital | Feb-22 | 24 | 
| 41 | West Middlesex University Hospital | Aug-21 | 21 | 
| 42 | Tunbridge Wells Hospital | Oct-21 | 26 | 
| 43 | The Jessop Wing - Sheffield | Mar-22 |  8 | 
| 44 | Wigan Infirmary | Aug-21 | 12 | 
| 45 | St Helens and Knowsley Teaching Hospitals | Aug-21 |  6 | 
| 46 | Basingstoke and North Hampshire Hospital | Oct-21 | 19 | 
| 47  | Royal Hampshire County Hospital, Winchester | Oct-21 | 11 | 
| 48  | Stoke Mandeville Hospital | Feb-22 | 41 | 
| 50 | Epsom and St Helier University Hospitals | Feb-22 | 16 |