Right. I have hardly run since I have started my new job, due to long hours, many hours sat on the train and living in two places etc

I think the answer is a bag so I can run to and from the station and get off a stop or 2 early etc

It's not quite as straightforward as carrying just a change of clothes & shoes as I am generally leaving home to come to London for work for 2 or 3 days at a time. It means I need to carry a few extras, like a couple of tubs of food to save me from spending £££££s on food-on-the-go, plus a little laptop (really little) and book for the long train journeys, and occassionally, if I haven't been organised enough to leave clean clothes at my London room then an extra top or jumper in addition to that days change of clothes.

So... I think that it needs to be not little but not big and as comfy as possible with as little joggling around as possible, especially as it is likely to be fairly heavy sometimes

Help please