heya!
mya work with first medical finance, from what i’ve found they offer 2 different types of loans, 12 months interest free or like a regular one where you just pay it off bit by bit. dont know too many details about that one but i went with the 12 months interest free and basically you just set up a direct debit for the amount to be taken out of your account every month. if first medical reject you i think mya now do their own loans too but i think they are slightly more expensive.
ive saved up so had a big deposit to pay off which helps being accepted for finance and obviously makes the rest easier to pay off.
hope this helps! xx