This influx of people changed many aspects of life in Haverhill. One noticeable change is that the local Suffolk accent (still spoken by the town’s older residents) has largely been replaced by a London/South-east England accent characterised as Estuary English. The expansion was not without friction. Residents who moved to the newly developed areas complained about the housing density and lack of amenities in a 1968 Man Alive documentary. Nowadays, Haverhill is predominantly a modern and young town. The relatively small town centre is surrounded by many large housing developments, completed at various periods between the 1950s and the present. Haverhill’s economy is dominated by industry, and a large industrial area on the southern side of the town is home to a large number of manufacturing companies. Scientific firms including Sanofi and Sigma-Aldrich have plants in the town, as do International Flavors & Fragrances, and some waste processing, transport and construction firms. A business park has also been built on the industrial estate, alongside the bypass.