I, too, have been contacted by Rolls-Royce and Make UK, the former Engineering Employers’ Federation, which says that the chemicals affected—these in-flight chemicals, if you like—are a range of chromates using coatings, sealings, paints, primers and touch-up preparation, including chromium trioxide, which is used in the chrome plating industry and is significant for the automotive supply chain. It says that limiting the use of these substances would affect a wide range of component part manufacturers, processing houses, and maintenance and repair facilities, as well as other equipment manufacturers. This is exactly what the Environmental Audit Committee warned about two years ago: market freeze, where we simply freeze our automotive supply chains. Does the right hon. Gentleman agree that in a heavily regulated industry such as aerospace people cannot just switch suppliers from one day to the next?