Milan-based custom car maker Touring Superleggera will showcase its Bentley Continental Flying Star at Salon Privé next month.

Only 19 units of the hand-built car will be produced, with each one created in partnership with the owner - meaning that every car will be completely unique. The shooting-brake design has been seen before, with the company confirming its production plans in 2011. The car is offered with Bentley's 6.0-litre W12 engine, with power outputs ranging from 552bhp to 621bhp.

The company has previously shown its own Alfa Romeo 8C-based Disco Volante, with a production version of the car seen at this year's Geneva motor show. As with all of the manufacturer's models each unit is hand made, meaning that every Disco Volante will take 4000 man hours and six months to complete. The original 8C's 444bhp 4.7-litre V8 engine and major hard points were carried over for the new car, with most of the effort being focused on creating new bodywork.

The brand has been creating bespoke cars for 80 years, starting off with bespoke Alfa Romeo models and creating its own Isotta Fraschini model in 1928. 

Salon Privé takes place from 4-6 September in London. Click here for more Salon Privé news.