If you have coeliac, don't fly with United.
On a recent 8 hour flight to America my meal consisted of a bunch of grapes, a piece of cheese and a banana.
While in America I spoke to three United employees. One was in too much of a hurry to speak to me (despite the fact she wasmanning the customer services desk. She had a meeting to attend.
One said they didn't do gluten free meals.
The third, a supervisor in San Francisco, assured me that they did and one would be provided on my flight home.
Luckily, the stewardess on this flight showed a bit of initiative and secured a first class meal of roast chicken with no sauce.