I cannot make up my mind!

You can take further maths without taking maths now?

Why not study maths alongside further maths?

No, if you take further maths you have to take maths but at my college we don't say maths and further maths, it's just further maths but of course maths is included.

That's what I am doing right now.

Taking French over further maths is perfectly fine then, if you're more interested in it, go for it.

I hope to study neuroscience at university, I am currently in Year 12.
I am taking biology, chemistry, further maths(counts as two AS levels).
But I am thinking of taking maths and french instead of further maths.
I enjoy both subjects as further maths gets me to think and I like doing calculations but I also like french because I get to learn another language.

So which should I take? Which would be better if I wanted to go into neuroscience?

HEEEELLLLLPPPPP!

Both are good to get into neuroscience. Further maths is not necessary but if you enjoy it there are benefits such as improving maths grades etc. You can learn French anytime, most unis offer language courses for free and some even count as optional modules which give you credit.

Overall, neither is a bad option so I would say just think about the workload: out of all your choices, French will be the most different (least complementary) so you may have to invest more time in it.

That's true, thanks.

I think I might just keep further maths.