A bomb damage 'then and now' ...
There were two intensive air raids on Birmingham in the autumn of 1940.
The first on 15th October started at 8.15pm and lasted until 4.00am with approximately 150 high explosive bombs dropped and 94 incidents caused by incendiary bombs.
The second raid on Friday 22nd November 1940 started at 6.40pm and lasted until 5.49am. Approximately 600 high explosive bombs and 300 sets of incendiary bombs were dropped.
One of the above raids must have cause the damage shown below
Source Barra ... http://barra.historynut.co.uk/
Shoothill show this pic entitled 'bomb damage at Cox's Screw Factory, Charles Henry Street, Highgate'. The location is correct because Rowton House is in view top left in the pic. One interesting item is the barrage balloon just below the skyline in the centre of the pic. It was probably lowered in the daytime and maybe flown from a site in Highgate Park.
The map below dated 1937 shows Albion Screw Works (for some reason not Cox's !) shaded green, with adjacent houses shaded pink. Rowton House shaded blue.
The aerial view below dated 1937 shows the screw factory (shaded green), the adjacent houses (shaded pink) and Rowton House (blue) far right.
source 'britainfromabove'
A matching aerial view today. The factory site would be behind the tower block and the Rowton House building (now a hotel) is on the right. Thomas Street is now just a footpath.
A modern view from Charles Henry Street looking across the factory site towards the former Rowton House building.