I would just like your opinion on whether this person i went on a date with is into me or not.

When i first met him i wasn't initially attracted to him but over the course of the evening i started to feel myself becoming more and more attracted to him. He had such a fantastic personality and we seemed to get on great. He kept on saying to me he was having really good time and that he found me very attractive. Before the date ended we kissed.

Over the next day we exhanged a few texts (initiated by me)both of us agreeing that we had a good night and would like to do it again sometime. When i suggested when perhaps he would like meet again, he said he was really busy and the moment and then is going back to his hometown for a bit. He asked if he could phone me when he gets back to arrange to meet up again to which i agreed to. I haven't heard from him at all in a couple of weeks and i now know that he has returned from home. Do you think he has changed his mind?

He could have found someone else, either that or he is ill or not in the best frame of mind at the moment. Excluding those, then really he is not as keen on you as he lead you to believe.  It depends how long he has been back, if it's just a few days, then I can understand, if it's a few weeks then that is out of the question because he should have caught up on things and set his priorities back to meeting you.

I have always thought that when someone is keen on you, you keep in regular text contact and try to meet up as soon as you can.

That's my understanding of how things go as well.  If you are really keen on someone you will try your best to make time to meet up with them.  I can understand him not wanting to meet up because he's going away and before going away is a busy time.  And I can also understand him not meeting up with you in the few days after he comes back, because that is catch up time.  But several weeks after coming back, that's just too much.  It can only as you suggest mean he is not as interested as he lead you to believe in the date.