I have impulse-bought 3 veg (or technically fruit...) plants in pots - a sweet pepper, an aubergine plant and a purple tomato (from the sale bench but looking very healthy after some TLC)!
At the moment I have put them into bigger pots and have them on the decking outside, by the house wall for warmth. Unfortunately it's not facing in the best direction though - they do get some sun, especially in the afternoon but not all day, and we are in the North East too so DH keeps telling me they won't produce anything there! But they look nice there and seem to be doing well so far (been out there about 5 days).
The other possibility is in the porch, if I can clear some space - that gets very warm and sunny, but the main risk is if I forget to water them for too long they'll probably croak! Also DH tried growing tomatoes there one year and although the plants grew and flowered well, he got almost no fruit (I suspect because not enough insects got in to fertilise them?). There is also a risk of being tripped over/having scooters dropped on them etc... so I can't quite decide! Do you think they are likely to do any good outside or should I bring them in?