She contributed to the design of the Shakespeare Memorial Theatre in Stratford, and is known especially for her line-drawings in Edward Gunn's Regency Houses series, and in John Summerson's book Georgian London.
[1] She was considered a talented student at the school, and Robert Atkinson, the Director of Education, wrote to Sleigh's father to request that her initial two-year stay be extended to allow her to complete the five year course of study.
The medallion was not awarded that year but due to the strength of their entries four students, including Sleigh, were exempted from the testimony of study normally required for the RIBA final exam.
While employed, Sleigh also produced drawings for other architectural practices, and illustrated Edwin Gunn's series Regency Houses which ran as a supplement to Architect and Building News between 1932 and 1935.
[1][2] Sleigh gave birth to a son in 1934 and soon after returned to work, partnering for a short while with Janet Fletcher, another AA 'pioneer woman student'.
During this time the firm worked on the Wharrie Cabman's Shelter, the Fawcett Building at Newnham College in Cambridge, and two infant schools.