Throughout the twentieth centuries, it secured multiple licences from other firms, facilitating the production of materials such as ductile iron and cast Hastelloy® (super nickel alloys).

The firm became a limited company, R. Goodwin & Sons (Engineers) Ltd., on 11 October 1935; it was listed for the first time on the London Stock Exchange in 1958.

During the late twentieth and early twenty-first centuries, the oil and gas industry was a major source of business for the firm; however, this when into a sharp decline in the 2010s.

[2] The firm developed itself into a specialist in mechanical and refractory engineering; the design and manufacture of metal components and mineral-based products that can retain their form and strength under extremely high temperatures.

[2] During 1990, Goodwins were granted an exclusive (to the UK) license from Haynes International to produce cast Hastelloy (super nickel alloys).

[3] During 2016, Goodwin commenced the expansion of its original foundry site by 22 percent; this involved the creation of an engineered retaining wall.

[2] In early 2020, the company embarked on an expansion of its Stoke-on-Trent headquarters, which involves the addition of two extra levels at its Hanley site for more office space and the construction of a 60-space multi storey car park.