Writer Beatrix Campbell visits the successful Byker housing estate in Newcastle, designed by Ralph Erskine in the early 1970s. It's an epic development - both monumental and modest, and Beatrix Campbell describes why it is such an ingenious design solution.

The Boots factory is a vast glass palace built by Owen Williams in 1932. Iwona Blazwick from London's ICA tours the factory which is acknowledged as a masterpiece of early British modernism.