Add University of Leeds acknowledgement

Author: Robinlovelace

frontmatter/preface.tex

@@ -155,6 +155,7 @@ \chapter*{Preface}
    \item Lex Comber, who provided crucial comments on the structure of the first part of the book and a great insight into how to make it more useful for teaching.
    \item Malcolm Campbell, my predecessor in the PhD. Malcolm provided a huge amount of support during the early phase of my PhD and shared
 all the R code he developed. He's been a great support of the book from the beginning.
+   \item Everyone who provided input from the University of Leeds, including Mark Birkin, Nick Malleson and Andy Evans.
  \end{itemize}
 
  Morgane Dumont's research are funded by the Wallonia Region (Belgium) and she