The 4m high, 1km-long barrier will be constructed along the main motorway to the port in northern France. It is expected to cost £1.9 million and is being built as part of a £17 million package of measures. It is intended to add a further layer of protection against attempts to delay or attack vehicles approaching the port. Road Haulage Association chief executive Richard Burnett said: “This latest proposal...would be a poor use of taxpayers’ money.” He said the money to pay for a wall “would be much better spent on increasing security along the approach roads”. On Tuesday Immigration Minister Robert Goodwill confirmed plans to build a “big new wall”. He told the Home Affairs select committee: “The security that we are putting in at the port is being stepped up with better equipment. “We are going to start building this big new wall very soon. We’ve done the fence, now we are doing a wall.” ’Like’ The Scotsman on Facebook for regular updates DOWNLOAD THE SCOTSMAN APP ON ITUNES OR GOOGLE PLAY