London Underground (Tube) operates a train from London Bridge Station to Stevenage every 5 minutes. Tickets cost $3 - $4 and the journey takes 10 min. Great Northern also services this route every 30 minutes.
How to get from London Bridge Station to Stevenage
From London Bridge Underground Station Tube to London Kings Cross then train to Stevenage. 52 min £14. From London Bridge train to St Albans City Railway Station then line 301 bus to Stevenage, Bus Station. 2 h 15 min £15. From London Bridge Station taxi to Stevenage. 49 min £149. From London Bridge Station drive to Stevenage. 49 min £6.