He learnt that the commercial banks wanted equipment to automatically sort cheques to replace the large number of staff engaged in cheque sorting .
In 1947 , Crosfield set up a laboratory in the attic of his house in Hampstead Garden Suburb , London to develop two new projects .
Crosfield learnt that the commercial banks wanted equipment to automatically sort cheques to replace the large number of staff engaged in cheque sorting .
In 1947 , Crosfield set up a laboratory in the attic of his house in Hampstead Garden Suburb , London to develop two new projects .