Thanks for your tips everyone. Yesterday was a bit of a funny day with her feeding at 1.30 in the afternoon and then not going down until 5.00. She ate again at 7.30, had a bath then fell fast asleep so we put her down at 9.00 and she didn't wake up until 5.00 this morning. I can't believe it, it's probably a one off, but that's almost a full night's sleep! She didn't eat too much before bed, about 5 ounces, so that may be something to watch as she slept very soundly with no apparent tummy pains.
Thanks and fingers crossed for tonight !