If anyone else is having this problem... I got them from Marks and Spencers, I know I AM ROCK AND ROLL.
They were in Per Una and have a nice high waist which gives you the effect of having just pulled your jeans up to cover the dreaded top du muffin but without the stylish hitching action. Hope this helps someone! I'll see if I can work out how to do a link but don't hold your breath....