Last Updated on August 22, 2023

Contact Number

GSK is a global biopharma company with a purpose to unite science, technology, and talent to get ahead of disease together. Adverse events should be reported to this customer service number: 0800 221441.


980 Great West Road
United Kingdom


  1. Visit the TfL journey planner.
  2. In the “From location” field, enter your starting location (e.g., your current address, a nearby landmark, or a public transport station).
  3. In the “To location” field, enter the address of the GSK head office: “980 Great West Road, Brentford, Middlesex, TW8 9GS, United Kingdom”.
  4. Select your preferred departure time by clicking on “Leaving: now” and choosing the desired time and date from the dropdown menu.
  5. Click on the “Plan a journey” button to view the suggested routes and directions.

The journey planner will provide you with detailed directions, including the modes of transport to take, the stops to get on and off, and the estimated travel time.