Keith Lockhart. Keith Lockhart was >> in BBC Proms - Celebrating John Williams as 'Composer'.Katie Derham. Katie Derham was >> in BBC Proms - Celebrating John Williams as 'Self- Presenter'.Helen Mansfield. Helen Mansfield was >> in BBC Proms - Celebrating John Williams as 'Director'Matthew Sweet. Matthew Sweet was >> in BBC Proms - Celebrating John Williams as 'Writer'Martyn Stevens. Martyn Stevens was >> in BBC Proms - Celebrating John Williams as 'Producer'Francesca Kemp. Francesca Kemp was >> in BBC Proms - Celebrating John Williams as 'Executive Producer'Perry Bellisario. Perry Bellisario was >> in BBC Proms - Celebrating John Williams as 'Editor'Emily Goodman. Emily Goodman was >> in BBC Proms - Celebrating John Williams as 'Script Supervisor'