Thanks Hollo! Less than 200 is ok... Off to the GP tomorrow, will ask her how much it may cost.

ETA - thanks Heather. Hmm... Doesn't sound like it'll be a fantastic experience for her! If it's just constant runny poo, would they see her as an urgent case?

It's possible they would as she would be losing alot of nourishment with food going straight through her. Is she having trouble gaining weight? I would think that these things together would be considered urgent.
My DS2 has a dairy intolerance. I had stupidly weaned before finding out and then he would not take soy formula, he was 10mths old. So I had to resort to plain soy milk and soy products. They took that as urgent due to him not taking any formula.

Good luck OP.