Oliver has again visited The Purcell School for Young Musicians, in Bushey.
Oliver was invited to meet with the Principal, Paul Bambrough and afterwards met with the students who performed a short recital.
Oliver said: ‘It was great to visit The Purcell School for Music in Bushey again today.
We are fortunate locally to have a world-renowned school that admits the very best from all backgrounds. It was a pleasure to meet with some of the extraordinarily talented students, who gave a fantastic recital.'