Howells was the first black woman to sit on the GLC's Training Board; the first female member of the Court of Governors of the University of Greenwich and was the Vice Chair at the London Voluntary Services Council.
Howells war die erste schwarze Frau, die im GLC's Training Board saß, das erste weibliche Mitglied im Führungskreis der University of Greenwich und sie war Vizevorsitzende der London Voluntary Services Council.