The idea that the UK doesn't make anything anymore and relies on financial services is completely untrue. We manufacture 1.4m cars a year and the UK is the 6th largest exporter in the world. The sector employs 2.5m people and it is growing. A report by PwC highlights this fact. http://www.pwc.co.uk/assets/pdf/ukmanufacturing-300309.pdf
Yes, the services sector has expanded more rapidly than manufacturing in recent years but this does not mean it is in some sort of terminal decline. Other perception problems may stem from the fact that some high profile manufacturing operations are not British owned, such as Jaguar Landrover but they still contribute huge amounts to the UK economy.
Try this myth buster courtesy of the Make it in Britain exhibition at the Science Museum.