Completely understand you don't want to be in Leicester as someone from Leicester 😂
I have a Master and Bachelors in Chemical Engineering, it would be unfair to say I regret it because it's given me a lot of transferrable skills. I don't work in Chem Eng, nor do most of the people from my cohort.
I would ask you what Subjects did you enjoy the most in A-levels and what would be your motivations for doing Chem Eng because like I was, and most finishing A-level you seem unsure, and as a Chem Eng grad, and someone who knows many other Chem Eng grads it's not something to go into half-heartedly!
Chem Eng is applying Mathematics and Physics to processes which involve fluids. A big part of Chem Eng is Thermodynamics - study of heat, phase equilibria etc, Fluid Mechanics - study of fluid flow, Process Design - so like looking at processes in oil & gas, pharma and renewables - as part of Design you will also look at Process Safety - HAZOP, root cause analysis etc and Process Control. Contrary to popular belief it actually doesn't have a lot of Chemistry or Biology, some universities have more than others. Reaction Engineering applies Mathematics to understand reaction kinetics, that's probably the only Chemistry one that's common across the board. Probably some Transport and/ or Separation Phenomena module/s, and Mathematics module/s.
I'd heavily advise you to look at the modules offered by each University and do some deeper research online on the subsequent modules.
Modelling using MATLAB is a HUGE part of Chem Eng, this is where you code mathematical differentials equations, representing reactions, heat changes, mass changes, fluid flows into a computer software, and then analysing it.
If any of this sounds like the type of thing you'd enjoy, go for it! If it doesn't then there's honestly so many University courses which have different flavours of Chemistry. Do your Research and do what you think is right 🙂 Congrats to you for not needlessly continuing a course that you didn't like, I watched many people not do that and be miserable.