Don't bother with rip off passport photo machines! Take a photo on your phone and upload it to here: https://www.123passportphoto.com/?country=GB. Format using the free online service, save the resulting file to your phone, then take your phone to Boots (there is one on Rye Lane), and use their in-store instant digital photo printing service, upload file from your phone to machine, print it and pay about 30 or 40p to the cashier. Take your photo home and cut out the passport photos (usually 6 to a photo). If you don't have a smart phone, then you can do this with a normal digital camera and a USB stick to take photo to Boots.