currently in the second year of my three year graduate overdraft and (nearly) paid the full amount off ( i left university with the max £1800 overdraft). Currently, i am sitting on £400 overdraft. because i worked extra hours (supermarket chain, highest paying in the uk, store assistant lvl) this month is is possible for me to pay off all of it and still have a months living money. However, the main question i have is what should i do with my account next? i am planning on saving up for a deposit so i can move out and rent next year, as i live currently in the middle of nowhere and don't drive (prefer public transport).

Currently, i am, and always have been, with natwest. however i have no particular loyalties to anyone. my income is between £850-£1250 post tax a month, and would love to get the most out of my money

TL;DR just finished paying off my graduate overdraft, what should be my next step?