Hey there D. It depends what you mean as southeast. If you mean London, then it could be pricey. If you mean out of London then yes it should be sufficient to live comfortably enough. After all, life is as expensive or as cheap as you make it. Nothing wrong with bringing perhaps some extra money if you want some 'luxuries', but for day to day living 12K (and i assume you mean this is taxfree) should be plenty.