A Staffordshire firm has sealed a £500,000 deal to supply an anti-graffiti liquid for trains in New South Wales.

Lichfield-based Blocksil's innovative product provides a stay-clean coating for the exterior and interior of trains.

The deal has been signed with Mason Grogan which is a major supplier to the rail and defence industries including materials for train and aviation interiors and also insulation products.

Blocksil uses nano technology to create a liquid waterproofing membrane suitable for a range of applications including an anti-graffiti coating which allows graffiti to be removed with just soap and water.

Other applications include a roof coating which reduces CO2 emissions and saves energy and an asbestos-encapsulation coating.

The company was set up in 2012 by Chris Knowles after many years of working in the coating industry developing new products.

The contract announcement coincides with the start of UKTI's Export Week which runs until November 14 and follows a trade visit to Australia and New Zealand last month.

Mr Knowles said: "We've benefited greatly from UKTI support in other markets such as southern Ireland, Spain and Mongolia.

"Without the help of UKTI and its programmes, I would not have looked at the Australian market. We estimate that our export business has already improved the overall business by about 30 per cent in the last 18 months.

"The future looks exciting with our products being tested as a stay-clean coating for street furniture in Belgium and Hong Kong."

Paul Noon, UKTI's regional director for the West Midlands, added: "Australia is a vast country with endless opportunities for a wide range of West Midlands firms.

"As the fifth largest economy in the Asia-Pacific region and the 14th largest economy in the world, Australia has had 22 years of uninterrupted economic growth.

"As we start Export Week, I encourage as many firms as possible to look at the opportunities for exporting to Australia - along with all the other global opportunities."

A series of events are taking place across Birmingham and the West Midlands this week as part of Export Week.