You may purchase tickets by typing the quantity required (the default is '1') and then clicking the red shopping cart icon
Each time you click the icon you will be shown a page with a summary of your order so far.
Press "Continue Shopping" button on the bottom of the summary page to add more items to your order.
If you intend to enter a sequence, you may also do this on the 'Enter a Sequence' page before checking out.
NB - If possible please pay by Bank Transfer as this helps to keep our costs down