Serious Trust Ltd is registered as a company limited by guarantee in England and Wales: no 07883912 Registered charity 1145535 Registered in England and Wales: Serious Ltd No. 3111637; Serious Events Ltd No. 3307985: London International Jazz Festival Ltd No. 3174471: In All Seriousness Music Ltd No. 4985288. Registered address: 51 Kingsway Place, Sans Walk, Clerkenwell, London EC1R 0LU.