One hundred and fifty-one of these locomotives were built at LOCATION@1 , ORGANIZATION@1 and LOCATION@2 , the first twenty of them as part of the British Rail NUMBER@1 Modernisation Plan .

One hundred and fifty-one of these locomotives were built at LOCATION@1 , ORGANIZATION@1 and LOCATION@2 , the first twenty of them as part of the NUMBER@1 MISC@1 Rail modernisation plan .
