 In 1920 it joined the engineering combine Agricultural & General Engineers (AGE) which failed in 1932.Barford & Perkins relocated from Peterborough at the end of the 1920s into part of the Aveling & Porter works in Rochester.Both companies made road rollers but the ranges were complementary, the Barford rollers were petrol-powered —the engines were made by Peter Brotherhood— and smaller than Aveling's steam-powered rollers.