London Buses operates a bus from Islington to Knightsbridge every 10 minutes. Tickets cost $3 and the journey takes 21 min.
How to get from Islington to Knightsbridge
From King's Cross St. Pancras Underground Station Tube to Knightsbridge Underground Station. 12 min £2. From Covent Garden, Savoy Street line 9 bus to Knightsbridge Barracks. 21 min £2. From Islington taxi to Knightsbridge. 11 min £23. From Islington Uber to Knightsbridge. 11 min £18. From Islington walk to Knightsbridge. 1 h 20 min. From Islington Green, Angel Bikeshare to Montpelier Street, Knightsbridge. 33 min.