growstuff the original Chartists' mural, which was lovely and in the city centre, , was smashed to pieces, despite protests when the town centre regeneration took place.
A new one was commissioned eventually, made by the son of the original artist but is very much smaller (10%of the original), is series of plaques and out somewhere outside the city. Lovely though it might be, it's not a mural as such.
Your photo shows the original one.