Public WiFi networks depends on Radio Access Points, (RAPs), similar to a home wireless broadband router, installed on lamp posts. This is how we put them up (not me! I took the photo ...).
And this is what they look like when they are up.
The Radio Access Point is larger than a home wireless router because it's housed in a weatherproof container. These are US devices and are hardened against hurricanes and shotgun blasts. Obviously not necessary in Newcastle!
On the current plan, at this stage not a single operational device has been installed, so from a project point of view, this is all work which has to be done over the next few months.