It's not always down to flying experience - they are taking low hour approved course pilots, what experience is there in those cases?
Sure, they state a minimum experience level to reduce applications, but they are looking for more than that. Someone once said to me that they could train a monkey to fly an Airbus. Well, perhaps, but the point is that BA has been successfully training 200 hour pilots to fly jets for years.
Thay are looking for other skills as indicated by the essay style questions they ask on the app. If you have the bare minimum in experience but ring their bell with your profile then you've got a chance.
Don't give up (one characteristic that won't get you selected!)
Ivan