Leslie Stephen "Teacher" Palmer, MBE (born 21 August 1943), is a Trinidadian community activist, writer and teacher, who migrated in the 1960s to the UK, where he became involved in music and the arts in West London. He is credited with developing a successful template for the Notting Hill Carnival, of which he was director from 1973 to 1975, during which time he "completely revolutionised the event and transformed its structure and content almost beyond recognition." He is also known by the name of "The Wounded Soldier" as a kaisonian.
Born in Tunapuna, Trinidad, in 1943, Leslie Palmer migrated to England in 1964 at the age of 21. At first he settled in the Kensal Rise area of London, and helped to form the Blue Notes Steel Orchestra in Ladbroke Grove. He trained as a teacher in Liverpool (thereafter acquiring the nickname by which he became affectionately known).
Palmer participated in the Notting Hill carnival festivities held annually since the mid-1960s, and had also been back to Trinidad to study the organisation and artistic forms of the carnival tradition there. He had been thinking of how the London event could be improved, by broadening it to make it more inclusive of all the Caribbean islands as well as of British-born black youth, and he was given the opportunity to begin implementing his plans after taking on the role of carnival organiser in 1973. Anthony Perry, former director of the North Kensington Amenity Trust, who provided Palmer with premises from which to operate at 3 Acklam Road, has said: "I don’t think there was a Notting Hill Carnival as the world knows it until 1973 when Leslie Palmer really put some juice into it and turned it into an all-island event". In the words of Tom Vague: "Under the administration of Leslie Palmer, the Notting Hill Peoples Carnival was transformed into an urban festival of black music, incorporating all aspects of Trinidad’s Carnival... getting sponsorship, recruiting more steel bands, reggae groups and sound systems, introducing generators and extending the route. The attendance went up accordingly from 3,000 at the beginning of the 70's to 30–50,000." Palmer encouraged traditional masquerade, and for the first time in 1973 costume bands and steel bands from the various islands took part in the street parade, alongside the introduction of stationary sound systems, as distinct from those on moving floats, which as Alex Pascall has explained: "created the bridge between the two cultures of carnival, reggae and calypso." According to Claire Holder (Carnival organiser 1989–2002):