ITV has learned that as many as four new models may come to Jaguar's Castle Bromwich plant in Birmingham.
Today the company announced it was taking on 1,100 new people to build the XF Sportbrake - a new estate car.
But Tim Parker, from the union Unite, said four models could be built at the factory over the next five years.
Jaguar Landrover says it is taking on 1,100 people in a massive expansion of its factory at Castle Bromwich in Birmingham.
An announcement is due shortly from Jaguar Landrover about plans to build new cars at the company's plant in Castle Bromwich in Birmingham.