The Walton Comp was demolished in 2006(?) to make way for one of the new Academy Schools to be built on the same site. The wall would obviously have been demolished at the same time. No mention of a climbing wall on their new website either.
http://www.thevoyagerschool.com/
info@thevoyagerschool.com
"Yes, we have a wall, but it's unsafe.. the pins at the top are
unusable." To quote the staff, who say it's never used.