B Bayton Road Industrial Estate Birmingham Brierley Hill C Coventry Cradley Heath D Darlaston Dudley E Erdington Exhall H Hampstead Industrial Estate Herefordshire L Lyng N New Shires Industrial Estate O Oldbury S Saltley Shropshire Staffordshire Stourbridge T Tipton Tyseley W Walsall Wednesbury West Bromwich Willenhall Wolverhampton Worcestershire