As a student of Titchmarsh in Oxford in the years immediately before the second world war it was natural that Guinand's research interests should be directed into the field of Fourier analysis and the Riemann zeta function.
Bilang isang mag-aaral ng Titchmarsh sa Oxford sa taon kaagad bago ang pangalawang mundo digmaan ito ay natural na Guinand's research interes ay dapat Directed sa larangan ng Fourier analysis at ang Riemann zeta function.