My artwork arrived from John today, in summary:
John responded to my order on a Saturday and we quickly finalised the order via email. He advised it would be printed and posted on Wednesday.
John sent a confirmation email that it had been posted on Weds with tracking number.
The artwork arrived in the UK in 8 working days, well packaged in a tube.
The artwork is amazing, great quality colour, high quality media and everything I was hoping for.
In short, I cannot fault the service, and highly recommend it.