Convent Garden was a district in London.
The Eighth Doctor was passing through it in 1840 when he met Penny Chapman. She cried out in a dazed state, brought on by her self-hypnosis, and it was assumed by all near that the Doctor was harassing her. Those close turned on him, but were distracted by the arrival of Spring-heeled Jack who caused the crowd to flee. The police arrived on the scene as Jack moved to attack Penny, but the Doctor knocked him away. The police officer Bates scared Jack away after he fired upon him.
Inspector Arnold Porter arrived at Convent Garden and questioned the Doctor but Penny vouched for him, having regained her senses. The Doctor escorted Penny home. (COMIC: The Curious Tale of Spring-Heeled Jack)