Thanks for all the input guys. Had another 2 hours today and it was much much better. I was trimming more frequently which helped a great deal.
Also, was a little less reluctant to adjust power when downwind. Yesterday I would set it as I levelled off and leave it there no matter what. Today I decided to make small power adjustments if required and it really really helped. The final piece of the puzzle for me was to take a few looks down at the VSI. I wasn't doing this yesterday and was 'finding myself' at 1200, today I noticed that a brief look at the VSI will demonstrate how I managed to get there and that being at 1000 feet alone is not enough. Got to nail that level flight as well.
All together an immense improvement on yesterday (which my instructor was quick to point out!). Solo is coming, solo is coming
.