[4] As a result of further expansion, the company moved to larger premises at Erskine Road, Chalk Farm, NW3 in 1932; three years later, a new 150,000 sq ft (14,000 m2) factory at Western Avenue, Acton.

[4][5] During the 1930s, Ultra manufactured a wide range of domestic radio receivers including the Blue Fox, Lynx, Panther and Tiger models.

[6] During the Second World War, Ultra diversified into aviation; the Short Stirling was the first aircraft to incorporate their products, the company acting as a subcontractor to produce tails and bomb doors for the bomber.

[4] Various engines, including the Armstrong Siddeley Mamba and the Rolls-Royce Avon, incorporated components such as temperature regulators, fuel flow valves, and throttle controls produced by Ultra.

[5] As a result of the acquisition, the remainder of the company became Ultra Electronics Ltd. Amongst its varied product range at this time, it produced the "Jezebel" and "Mini-Jezebel" sonobuoys.

[13] In September 1995, Ultra Electronics received its first major export order from the American government, to supply support equipment for its McDonnell Douglas AV-8B Harrier II fleet.

[17] Various companies, including Bombardier Aerospace and Airbus, have chosen to incorporate Ultra Electronics' noise reduction and vibration dampening products onto their aircraft.

[18][19] According to Flight International, since regaining its independence in the 1990s, the corporate strategy of Ultra Electronics appears to have been slanted towards maintaining a diverse product range, avoiding any large exposures to a single market, as well as being intentionally widely dispersed geographically.

By 2005, Ultra Electronics was ranked as the 66th biggest aerospace company in the world: at this point in time, the American market accounted for around one-third of the business's turnover.

[21] A merger enquiry into the anticipated acquisition (Ultra Electronics is a key national security and the defence contractor, Cobham, is American owned)[22] was completed in January 2022,[23] with a report being passed to the Secretary of State for Business, Energy and Industrial Strategy, Kwasi Kwarteng.