Kids under 12* can eat free from the delicious Tilly's Treats menus - all day, every day at selected Gordon Ramsay Restaurants in London:

• Bread Street Kitchen (St Paul's)
• Heddon Street Kitchen (Regent Street)
• London House (Battersea)
• maze Grill Mayfair (Mayfair)
• maze Grill Park Walk (Chelsea)
• maze Grill Royal Hospital Road (Chelsea)
• The Narrow (Limehouse)
• Plane Food (Heathrow T5 Airport)
• Union Street Cafe (Southwark)
• York & Albany (Camden)

*Aplies to children under 12 dining from Tilly's Treats menu only. Valid for 1 child's meal per every adult's meal ordered from the a la carte menu. Not valid on Christmas Day or New Year's Eve. 

https://www.gordonramsayrestaurants.com/whats-on/kids-eat-free/