She is a custodian of a collection and library covering 500 years of Caribbean heritage, inscribed by UNESCO as a Memory of the World. The central mission of the charity is to improve the general welfare of the peoples of the Caribbean and the societies in which they live and work through the auspices of education, training, advice, advocacy and where necessary acting as an umbrella organization. Her work includes disseminating the heritage of the region.
Blondel is a Fellow of King's College London and served on the College Council for nine years, together with the College's Investment Sub-Committee. She also served on the Development Committee of the National Arts Collection Fund for several years and as a Governor of the Museum of London, representing the Mayor of London.
She is a solicitor of over 30 years standing with more than 18 years’ experience in the City where she was recognised as one of the leading experts in Stock Exchange Money Broking. In that capacity, she wrote the industry standard documentation that was adopted globally, as well as working with the London Stock Exchange and Bank of England to devise the regulatory framework that would govern the market. She also worked with the Inland Revenue to introduce Statutory Instrument 1299 by which the market was taxed.
Whilst at Lazard Brothers & Co., Limited she established the first in-house legal department, still in practice today, and became an Assistant Director to the main board at the age of 28.
In conjunction with her legal career, Blondel became a successful jewellery designer, with many pieces in various Royal collections. She is a Liveryman of the Worshipful Company of Goldsmiths, one of the Twelve Great Livery Companies of the City of London which received its first royal charter in 1327 and sits on the Royal Mint Advisory Committee on the Design of Coins, Medals, Seals and Decorations established in 1922 to advise government and ultimately the Queen on matters of design in order to raise the standard of numismatic and medallic art in Britain and the themes for coin in circulation, for which she recieved a CBE together with her work for the Caribbean.