VivThanks Mike. That also answers a question I had about whether it was Ann Street behind the buildings to the right and running down the side of Christ Church. Ann Street is one of those old streets that I find can be confusing, as although some of Ann St became Colmore Row, some disappeared under the Council House - well as I understand it, hopefully correctly !
Viv.
I dont think an appreciable amount of Ann st was beneath the council house. Ann st curved down at the end across what is now Victoria Square, away from the council House