Terrific! Thanks so much to Barry @swagit and Alicia St Rose @laughhearty for your replies.
Hi Joe,
Just wanted to let you know about a little quirk. When you are on the cart page (my currency is set to British pounds)and you press the + or – keys to adjust the amount the Total amount then reverts to dollars. Nothing major just though I would let you know about it.
Hi Joe,
Thanks for your reply. I have managed to sort it out. It was either another plugin that was causing the problem or the fact I had the ticket child label on the event post page set to zero.