[1] Her parents Henry Hope and Nellie Hillier (née Buck) assisted, but by 1922 her father was manager of the Haymarket Theatre, London.
[1] The family moved to West Ham and then Walthamstow, by which time the sisters were working as actresses or gaiety girls under the names Hope and Trixie Hillier.
While on tour appearing in The Cinema Star at the Royal Court Theatre, Liverpool, she met Arthur Topham whom she would later marry.
[1] After the war ended, Topham Ltd obtained permits, materials and workmen to repair damage to the stands and course so the Grand National could resume in 1946.
[6] In 1960 she took the decision to end 'Jump Sunday', a traditional event when up to 100,000 sightseers could walk round and view the Grand National course prior to the races.
[1] The BBC concluded an agreement in 1959 for exclusive rights to televise both horse-racing and motorcar racing from Aintree for an initial 3 years.
The racing calendar declined from the 1950s and 60s so that by the early 1970s it consisted of a single three-day meeting each year that included the Grand National.
[12] When the Earl of Sefton sold the Aintree Racecourse to Tophams Ltd in 1949, he put a restrictive covenant in place that the land could only be used for agriculture or horse-racing during his life.
In 1963, Mirabel Topham, as chairman, initiated negotiations with Lord Sefton to have this covenant put aside so that the land could be sold for housing development.
[17] In 1973 she allowed filming at Aintree for Dead Cert (based on a Dick Francis novel) that starred Judi Dench and Michael Williams.
[1] She died at home of cancer on 29 May 1980 aged 88 and is buried in the Topham family vault in the Catholic monastery at Pantasaph in North Wales.