Is it worth applying to LSE?

Thanks, I will consider this.
Do you think History at Edinburgh, St Andrews, and UCL is realistic for my academic profile?

Well, with achieved grades why not apply to both before the Oxbridge deadline, but leave your other choices blank. That way, you will hopefully know where you stand before the equal consideration deadline and can adjust accordingly.
PS LSE are generally very heavy on GCSE grades, so I doubt other courses there would be much easier to get into.
Is there a particular reason you want to study there?

Do you think 999877765 is good enough for econ+econ hist? 8 maths 7 eng lang (5 and 6 in french and computer science)