This is what we found on Wikipedia regarding the Whitefella Yella Tree:

The Italia Conti Academy of Theatre Arts, also known simply as Italia Conti, is a drama school based in Woking, England. It was founded by the English actress Italia Conti in 1911. Italia Conti offers courses in acting, musical theatre, and dance, catering mostly for 16+ and 18+ students through its higher education programmes, and for younger learners (3–18 years) through its Associate Schools and pre-vocational courses.

Italia Conti is a member of the Federation of Drama Schools formerly Drama UK, and accredited by the Council for Dance, Drama and Musical Theatre (CDMT). Italia Conti was a member of National Council for Drama Training (NCDT) before the organisation dissolved in 2012.

Originally based in London, the institution has occupied various premises throughout its history. In August 2022, Italia Conti consolidated its operations into a new facility in Woking, Surrey, which includes specialised studios for dance, acting, and musical theatre, as well as recording and television production spaces.