What UK flight school are you with? I'm a qualified ATPL TKI and am surprised that your were put forward for the exams when you clearly weren't ready. Everyone learns at a different pace and I've worked privately with students, on a one to one basis, to get them successfully through their exams at the 4th attempt! The 'hot house' environment of integrated training doesn't suit everyone, you should seriously consider modular. Don't give up, ATPL exams are hard work but not impossible to pass. If you're having trouble understanding a particular subject then there are plenty of TKI's who can offer private tuition if needs be.