According to the poster (click on image to enlarge), they have the latest computer equipment — which, unfortunately, they did not use in the creation of this poster.
It would have been so easy to use a spell-checker, but no. They seem to have proof-read to some extent, because someone noticed that they got the telephone number wrong, “0142” instead of “0141”, this has been corrected by sticking on a “1” over the “2” on the glass covering the poster.
Look how they managed to spell “International” with just one “a”.
Once again, it begs the question, if they cannot pay attention to detail on their poster, what is their work going to be like? They want to work on your Limited Edition Prints and expensive work by International Artists — would you really trust them if they cannot get their own telephone number right?