\documentclass[11pt]{report}
\usepackage[utf8]{inputenc}
\usepackage{graphicx}
\graphicspath{ {images/} }
\usepackage{caption}
\usepackage{subcaption}
\usepackage{float}
\usepackage[width=150mm,top=35mm,bottom=25mm,bindingoffset=6mm]{geometry}
\usepackage{fancyhdr}
\usepackage{setspace}
\pagestyle{fancyplain}% <- use fancyplain instead fancy
\fancyhf{}
\fancyhead[R]{\thepage}
\renewcommand{\headrulewidth}{0pt}
\setlength{\headheight}{14pt}
\usepackage[style=authoryear,sorting=none]{biblatex}
\addbibresource{references.bib}
\title{Thesis Title}
\author{Author Name}
\date{Day Month Year}
\begin{document}
\pagenumbering{roman}
\input{titlepage}
\input{abstract}
\chapter*{Dedication}
To mum and dad
\chapter*{Declaration}
I declare that..
\chapter*{Acknowledgements}
I want to thank...
Supported by grant numbers...
\tableofcontents
\listoffigures
\listoftables
\doublespacing
\chapter{Introduction}
\pagenumbering{arabic}
\input{chapters/introduction}
\chapter{Chapter Two Title}
\input{chapters/chapter02}
\chapter{Chapter Three Title}
\input{chapters/chapter03}
\chapter{Chapter Four Title}
\input{chapters/chapter04}
\chapter{Conclusion}
\input{chapters/conclusion}
\appendix
\chapter{Appendix Title}
\input{chapters/appendix}
\singlespacing
\printbibliography
\end{document}
