Is the Cash ISA appropriate to use for an emergency fund?

For context I’ve completed my Lisa for this year. I’ve now got 16 months to save £8000 as I want to dump £4K into it in March 2026 to complete nexts years and then again April 2026 for when it reopens, as my plan is to move out 2026. I thought I’d save this in Trading212 high interest cash ISA 5.12% and transfer over to the LISA on these dates, but would also like this to be my emergency fund, in the very rare case I’ll need to pull money out.