In reply to Taurig: I would probably take the job unless something else is going to come up. You say bog standard grad scheme, just to check what do you mean as most grad schemes are upward of 25k which in the current climate isn't a bad idea (depending on your degree and skill expertise). There are other schemes which too often tend to be called grad schemes just to limit application numbers.... anyway back to topic....
I have done the live away during the week and come home at weekends before, and will have to do it again for 6 months in the new year. It is not ideal but its a job with good transferable skills and a good salary (great if you consider my degree and the climate, according to the stats people). I looked at it in the following way.
How often do I spend quality time with my GF during the week and can this be moved to weekends?
How often do I see my friends during the week? (Rarely was my answer)
Am I able to continue my sporting interests (insert any interests)
How is the commute every weekend? Aberdeen to Cornwall would have been brutal for me, however a 2 hour drive up the M6, though not fun is manageable with ease.
Best case scenario, you make some new friends, have some cash, job prospects improve for future applications (due to the increase of responsibility) and you continue with most of the good stuff at home at the weekends, where you can really get away from work.