I think someone posted a wider view of this on Facebook OC. It's outside JYSK on the Lordsmill Street end of Markham Road.
Back in the day, JYSK was more or less the site of Hipper Street School where I went. I don't recall the gatepost being there then. I think it's been salvaged from somewhere else and placed there for interest.
Old pic of Hipper school yard is attached here. This is the part of the yard that was on Markham Road and approximately where the gatepost is sited now.