J. Lyons and Co.

J. Lyons & Co. (AKA Lyons') was a British restaurant chain, best known for their chain of tea shops and for the Lyons Corner Houses in the West End of London. The tea shops were slightly more up market than their ABC counterparts.

Lyons' in the works by Agatha Christie

 * Tommy Beresford and Tuppence Crawley frequents the establishments several times in The Secret Adversary.
 * In Lord Edgware Dies, Carlotta Adams has an alibi, stating that she was at Lyons Corner House in the Strand.