Warwick Beamer

\documentclass[10pt,aspectratio=169]{beamer}

\usepackage{amsmath}

\usepackage{ifxetex}
\ifxetex
	\usepackage{mathspec}
	\setsansfont[
		Ligatures=TeX,
		BoldFont={* Medium}
	]{Avenir Next}
	% Use Proba if installed
	\IfFileExists{fonts/ProbaPro-Regular.otf}%
	{\newfontfamily{\proba}[Extension = .otf,Path = fonts/,UprightFont = *-Regular]{ProbaPro}}%
	{\newcommand{\proba}{}}
	\usefonttheme[onlymath]{serif}
\else
	%\usepackage[utf8]{inputenc}
	%\usepackage[T1]{fontenc} % Disable for performance
	\newcommand{\proba}{}
\fi

\usepackage{datetime} % \monthname \the\year

\usepackage[british]{babel} % hyphenation

\usepackage[numbers]{natbib}
\renewcommand*{\bibfont}{\scriptsize}

\setbeamerfont{caption}{size=\footnotesize}
\setbeamertemplate{caption}[numbered]
%\usepackage[hypcap]{caption} %[justification=centering]
%\usepackage{subcaption}

\usepackage{ifpdf}
\ifpdf
	\usepackage{graphicx}
	\usepackage{epstopdf}
	\epstopdfsetup{suffix=.generated}
	\DeclareGraphicsExtensions{.pdf,.png,.jpg}
\else
	\usepackage{graphicx}
\fi

%\usepackage{booktabs}
%\usepackage{tabularx}
%\usepackage{array}
%\usepackage{multirow}

\usepackage{tikz}
\usetikzlibrary{arrows,positioning,shapes,shapes.geometric,backgrounds,fit}
\usepackage{tikzscale}
\usepackage{pgfplots}
\usepackage{pgfplotstable}
\pgfplotsset{compat=1.12}
%\usepgfplotslibrary{external}\tikzexternalize % Speed up plotting and drawing by rendering tikzpictures to external pdfs
\usepackage[skins]{tcolorbox}

\definecolor{warwickcolour}{HTML}{511C6C} % aubergine
%\definecolor{warwickcolour}{HTML}{C8A019} % gold
%\definecolor{warwickcolour}{HTML}{B4153A} % ruby red
%\definecolor{warwickcolour}{HTML}{5698D2} % sky blue

\def\titleimagepath{style/background}
\def\footerimagepath{style/background}
\def\departmentimagepath{style/wmg}

\setbeamercolor{frametitle}{fg=warwickcolour}
\setbeamercolor{itemize item}{fg=warwickcolour}

\setbeamercolor{caption name}{fg=warwickcolour}

\newcommand{\titleframe}[3][]{
	\begin{frame}
		\begin{tikzpicture}[overlay,remember picture,shift=(current page.south west)]
			% Warwick x = 0.975
			\path [draw=none,fill stretch image=\titleimagepath]
				(-\pgflinewidth,0.33\paperheight) --
				(-\pgflinewidth,\paperheight+\pgflinewidth) --
				(\paperwidth+\pgflinewidth,\paperheight+\pgflinewidth) --
				(\paperwidth+\pgflinewidth,0.33\paperheight) --
				(\paperwidth-1.25cm,0.33\paperheight) --
				(\paperwidth-1.625cm,0.33\paperheight-0.65cm) --
				(\paperwidth-1.925cm,0.33\paperheight-0.15cm) --
				(\paperwidth-2.225cm,0.33\paperheight-0.65cm)--
				(\paperwidth-2.6cm,0.33\paperheight);
			\draw [very thick,color=warwickcolour]
				(\paperwidth+\pgflinewidth,0.33\paperheight) --
				(\paperwidth-1.25cm,0.33\paperheight) --
				(\paperwidth-1.625cm,0.33\paperheight-0.65cm) --
				(\paperwidth-1.925cm,0.33\paperheight-0.15cm) --
				(\paperwidth-2.225cm,0.33\paperheight-0.65cm)--
				(\paperwidth-2.6cm,0.33\paperheight) --
				(0,0.33\paperheight);
			\node [anchor=north,align=center] at (\paperwidth-1.925cm,0.33\paperheight-0.7cm) {\proba \textcolor{warwickcolour}{WARWICK} \\[-\baselineskip+5pt]
%				\textcolor{warwickcolour}{\fontsize{3.4pt}{4pt}\selectfont THE UNIVERSITY OF WARWICK} % Comment this line to remove The University of Warwick from the Logo
			};
			\node [anchor=north west,align=left] at (1.25cm,0.33\paperheight-0.7cm) {\textbf{\Large #3} \\ #1 \\[0.5\baselineskip] {#2}};
		\end{tikzpicture}
	\end{frame}
}

\newcommand{\setwarwickbackground}{
	\usebackgroundtemplate{
		\begin{tikzpicture}[remember picture]
			\node at (\paperwidth,\paperheight) {};
			
			% This section adds a negative space image at the bottom of each frame
%			\path [fill overzoom image=\footerimagepath]
%				(\paperwidth+\pgflinewidth,1.25cm) --
%				(\paperwidth-1.25cm,1.25cm) --
%				(\paperwidth-1.625cm,1.25cm-0.65cm) --
%				(\paperwidth-1.925cm,1.25cm-0.15cm) --
%				(\paperwidth-2.225cm,1.25cm-0.65cm)--
%				(\paperwidth-2.6cm,1.25cm) --
%				(0,1.25cm) --
%				(0,0) --
%				(\paperwidth+\pgflinewidth,0);

%			\node [anchor=north west,align=left] at (0.15cm,1.1cm) {\includegraphics[height=0.6cm]{\departmentimagepath}};

			\draw [very thick,color=warwickcolour]
				(\paperwidth+\pgflinewidth,1.25cm) --
				(\paperwidth-1.25cm,1.25cm) --
				(\paperwidth-1.625cm,1.25cm-0.65cm) --
				(\paperwidth-1.925cm,1.25cm-0.15cm) --
				(\paperwidth-2.225cm,1.25cm-0.65cm)--
				(\paperwidth-2.6cm,1.25cm) --
				(0,1.25cm);
		\end{tikzpicture}
	}
	\addtolength{\textheight}{-32pt}
}

\setbeamertemplate{navigation symbols}{} % disable nav symbols

\begin{document}
	\titleframe{An Author}{My Presentation}
%	\titleframe[or: A subtitle]{An Author}{My Presentation}
	
	\setwarwickbackground
	
	\begin{frame}{Outline}
		\begin{itemize}[<+->]
			\item Introduction
			\item My work
			\item Conclusion
		\end{itemize}
	\end{frame}
	
	\begin{frame}{Introduction}
		
	\end{frame}
	
	\begin{frame}{My work}
		
	\end{frame}
	
	\begin{frame}{Conclusion}
		
	\end{frame}
	
	\begin{frame}[allowframebreaks]{References}
		\bibliographystyle{plainnat}
	\end{frame}
	
	\begin{frame}{Questions}
		Any questions?
	\end{frame}
\end{document}