Posted: 22/03/2014 at 10:59
You're probably right about it having been a bit dark in the propagator - just turn them regularly - they'll have to cope with a west window if that's all there is.
You can put a mirror behind them, or foil or white painted card like photographers do to reflect the light back at the other side of them
As for thinning out - there are one or two growing very close - ease the smaller one out very gently now so the bigger one can develop unimpeded.
They're in modules, so as long as you've only got one per module there's no need to prick out, - you can grow them on in the modules until they're ready to plant out - but if they're in seed compost I'd give them a little weak feed when they've got their first pair of true leaves.