ORD to / from LHR last week. For starters, better food options at the ORD Polaris lounge vs the LHR United Club. The flight staff advised me to wait for the arrivals lounge for breakfast, to put the situation in perspective. I at nothing on the ORD - LHR flight. The lounges and the sleep were the highlights of the trip. In light of the ceaseless flight disruptions the lounges and the food at the lounges were invaluable. The cauliflower and grape option served with the chicken is odd at best. I slept 6 hours on the ORD-LHR flight and slept 4 hours on the LHR-ORD flight and the flight experiences were better suited to sleep. The food options certainly were not aspirational but United isn't known for food. Menus on the ORD-LHR flight; but no menus on the LHR-ORD flight.