One of the fundamental changes in SDSR 2010 was to select the F35C over the F35B. The rational for this was that the F35C could also replace the Tornado and cover the RAF’s Future Offensive Air System requirement as well as the Joint Combat Aircraft requirement designed to replace the Harrier. However once it became clear that the cost of converting the aircraft carriers would be in the £ 5 billion pound range the decision was taken to revert back to the B model. However despite the decision to revert back to the B model no decision was taken to replace the Tornado with something else. The F35B will now have to serve as both a Harrier replacement and a Tornado replacement.
Having F35B as a replacement for the Harrier will give us capabilities light years ahead of what we had. Despite the criticisms of the B model in comparison to the Harrier it is a major capability improvement. However as a replacement for the Tornado the F35B does have limitations. I believe there are some relatively simple fixes that the UK can use to overcome the limitations of the B model so that it can serve as an effective replacement for the Tornado.