Not working in basket?

Ok I have got this working, great, thanks.
However it only works on the checkout page https://cardonaandsonspiritco.co.uk/checkout/

and not the basket page https://cardonaandsonspiritco.co.uk/cart/

is there a way to make it work in both?

Thanks again

Dan

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