Carandog, while it is a nusiance, it is best you get some. Go to the local GP and they can fax over your details from your own GP. With a bit of luck you should get some.
Go today, carandrog, even if you go to your local pharmacy they will be able to ring the GP this morning and should be able to give you a few days' supply as an emergency.
the local pharmacy should be able to provide emergency supply for you if you can produce a repeat prescrpition form and id..did that myself once when hundreds of miles away !!!