{}
% Hyperlinks and metadata
-\usepackage[pagebackref]{hyperref} % hyperlinks
+\usepackage[pdflang={en-GB},pagebackref]{hyperref} % hyperlinks
\renewcommand*{\backref}[1]{}
\renewcommand*{\backrefalt}[4]{[{%
\ifcase #1 not cited.\or p.~#2.\else pp. #2.\fi%chktex 1