. >> earlier this year, the prime minister visited westhill in my constituency. is a world centre of excellence in sub-sea engineering. will he ensure that the home office meets concerned local companies to discuss the future of the visa system to ensure that vital inward investment is not lost to this country? it supports thousands of local jobs. >> we will certainly do that. as i said in answer to an earlier question, as we look through the last government's points system and immigration policy, we really do believe that it will not be difficult to achieve much better immigration control without disadvantaging business. for example, things such as inter-company transfers should not be included in what we are looking at. i do not think we will have a problem. given the very broken system that we inherited, there should be no problems improving it. >> in almost every answer at pmqs, the prime minister unfairly blames the challenges facing our country on the previous government. will he tell us about his biggest mistake as prime minister? >> i will leave others to