Mine

\begin{figure}
    % Graph (a) of age of prostate cancer diagnosis in the UK
    % Graph (b) of global incidence of prostate cancer.
    \centering
    \subfloat[Diagnosis age of prostate cancer in UK males]{\includegraphics[scale=0.5]{Images/age-rate-diagnosis-cropped.jpg}}
    \subfloat[Global incidence of prostate cancer]{\includegraphics[scale=0.5]{Images/global-distribution-cropped.jpg}}
    \caption{(a) The rate of diagnosis of prostate cancer in males in the UK is virtually zero before the age of 45, with a peak diagnoss incidence between the ages of 65-80.  (b) The incidence of prostate cancer varies significantly globally, with the USA having a far greater incidence than China, India and Japan.  Mortality rates are far less variable with, outside Asia, between 15 and 20 deaths per 100,000 males. Figures taken from Cancer Research UK\cite{CancerResearch}.}
    \label{fig: age & distribution}
\end{figure}