Elarica Johnson is an English actress and model. She played Kylie in EastEnders and the waitress at Surbiton Station in Harry Potter and the…Elarica Johnson is an English actress and model. She played Kylie in EastEnders and the waitress at Surbiton Station in Harry Potter and the Half Blood Prince. She played Lula Landry in the 2017 TV series Strike, later adapted for the US on Cinemax as C.B. Strike and based on the novel The Cuckoo's Calling by Robert Galbraith. Her latest starring role is in A Discovery of Witches, in which she plays Juliette Durand.