Vikki, sorry I hadn't realised your baby isn't even here!! Why don't you introduce yourself on the section at the top of the forums and tell us all about you and when baby is due!!
I loved those mothercare ones in the early days, they dried quickly and as you only use them for short periods they are great, very slim too. I gave mine to my sil and she has told me they are her favorite (Flo was 3.5 weeks old at the time) so be happy you have them
Why don't you look at the 2nd hand nappies on our nappy market or at thenappylady.co.uk as nb nappys are so littel used they are usually in great condition. I bought all mine bar 2 or 3 2nd hand in the 1st size. I went for the try one of everything option so I'd know what I'd want for size 2 (that they are in for around 2 years!!), I've still only got max of 2 of any one nappy type
Good luck and keep asking whatever you need to!!