I went out from LGW to GND on 26 Jan in EC and believe the meat options were (I don't usually look at the veggie option...

Spanish chicken with rice. It doesn't mention cheese (I cannot eat cheese on a plane) or anything on the menu, and when I checked with the crew, they reviewed the "ingredients list" and confirmed that there was no cheese, but milk. However, after I went for this option, there was cheese in the meal... So don't choose this one!
The other option was beef stew with mustard mash. Thankfully my well-trained hubby went for this as a back-up option for me, and I enjoyed it very much. I don't think it had cheese or a creamy sauce.
Hope this helps