I am a lucky man – wrote to continental UK with pictures of the tyre and they suggested taking it back to the shop I bought them from and getting them replaced.
Well I got in touch with my LBS – dales in glasgow and they told me to pop in. After a brief chat I walked out with a new replacement tyre – although they no longer do the gp4000s it is now a GP4000s II – so no label on the tyre and a reflective strip around the tyre …. Still nice though.
And a very good service – just another reason to go LBS whenever you can.