1. UCL and Barts Heart Centre, London, UK
2. University Hospitals Birmingham, UK
3. Barts Heart Centre, London, UK
4. James Cook University Hospital, Middlesbrough, UK
5. Royal Cornwall Hospital, Truro, UK
6. Basildon Hospital, Essex, UK
7. John Radcliffe Hospital, Oxford, UK
8. Essex Heart Centre, UK
9. Addenbrooke’s Hospital, Cambridge, UK
10. Jersey General Hospital, Jersey
11. Manchester University NHS Foundation Trust, Manchester, UK
12. Westcliffe Medical Group Practice/Community Cardiology Service, Shipley, UK
13. University Hospital Southampton, UK
14. Royal Bournemouth Hospital, UK
15. Hammersmith Hospital, London, UK
16. Southampton General Hospital, Southampton, UK
17. King’s College Hospital, London, UK
18. King’s Health Partners, Guy’s and St Thomas’ NHS Foundation Trust, London, UK