How to pronounce “slad” in English

The Slade School of Art, which is normally part of University College London, was also evacuated to Oxford.

Ursula Sladek, a German woman-- I got really, really riled at the last time I said she was just a housewife,

And Peter Coyle, who is a rather camp painter of the Slade School, who's very much regretting having been shoved off to Oxford and missing all the fun in London