Any theft of any metal from your property should be reported to the Police on 101.
With regards to the noise of the scrap collector horns, they should not sound between the hours of 9pm and 8am. If they breach this you need to contact Birmingham City Council Environmental Services. http://www.birmingham.gov.uk 0121 303 1111
Theres more information about scrap metal van dealers and the noise on this web site please search scrap metal van 🙂