Is Speedline an Italian company?
Speedline Corse - wheel specialists in rally and race and alloy wheels S.L. Corse Ltd Registered address: Units C1 & C2 Haybrook Industrial Estate, Halesfield 9, Telford, Shropshire, TF7 4QW, U.K. Company Registered in England and Wales. Registration Number: 3731528
https://balancemotorsport.co.uk/alloy-wheels/speedline-wheels It appears to be an Italian company. It sounds like the UK branch is just a distributor/sub-contractor?
wiki Speedline SpA. Was a manufacturer of alloy wheels from Santa Maria di Sala in Veneto, today this is one of Ronal and is as Speedline Corse [1], the premium brand. Under the name Speedline sports car companies were mainly supplied, the wheels were made ​​of aluminum or magnesium. By purchasing volume manufacturers were their names to other manufacturers such as Volkswagen and Audi supplied. In North America, the products has been marketed under the name Aluminator. 1995 merged Speedline Spa with Hydro Magnesium and founded Hyspeed. At this time, Speedline Spa is the largest manufacturer of light alloy wheels in Europe. [2] With Porsche collaboration began when racing car Porsche 956 [3], and later a multi-part wheel for production cars was produced. and google maps says Ronal group is out of switzerland RONAL AG Lerchenbühl 3 CH-4624 Härkingen