Marta's works found in the collections of
Professor Robert Mundell, the Nobel Laureate in Economics, late senator Ted Kennedy, Dvina and Robin Gibb of the Bee Gees, Philip Byrne, vice-chairman of UBS London, Enzo Testa, Chairman of London Archant Publishing, Stelios Haji-Loannou of the Easy Jet and many others. Marta painted portraits of Princess Michael of Kent and Nelson Mandella.