Situated in South East England, Frimley is the head office for Siemens in the UK.  

Our Frimley office

Sir William Siemens Square, Frimley, Surrey, GU16 8QD

Contact Tel: 01276 696 000

Conveniently situated to access by rail, road or for either London Heathrow or London Gatwick Airports.

All visitors must report to reception in Faraday House which is the second building on the right as you enter the site. You will then be directed to our executive lounge, greeted by the concierge team and instructed to watch the site safety video.

All visitors are obliged to comply with the company's smoking policy while visiting Sir William Siemens Square.

Travel options

Travelling to Frimley

By Train

Frimley train station is a 15-minute walk from Sir William Siemens Square. It is served by trains from Guildford (approx 40 minutes) and Ascot (approx 20 minutes) stations, both of which have main line services into London Waterloo. Farnborough Main and Farnborough North stations are also within easy reach of Sir William Siemens Square.

Farnborough Main station has a fast service into London Waterloo with two direct trains per hour at peak times and a typical journey time of just 35 minutes. There are two further services that require a change at Woking, with a typical journey time of 47 minutes.

For information on train times call National Rail Enquiries on 08457 484950 or visit:

All three stations will be served at peak times by the park and ride bus, according to demand. For further details please call the helpdesk on 08451 293000. 

By Car or Motorbike

Sir William Siemens Square is located approximately one mile west from junction 4 of the M3 motorway, although the site can be reached from several other major routes. Junction 12 of the M25 is approximately 12 miles to the east.

The car park has spaces for up to 644 cars, booking is not required but there is an access barrier.  If you are a Siemens employee you will need to swipe your PKI card at the barrier to gain entry, for non siemens employees there is an intercom to the right of the barrier which connects to Security.

Situated on the ground level of the multi storey car park are a number of dedicated motorcycle spaces. There is no need to book these spaces. Showering and changing facilities are available on site.

Safety information

Security and Health and Safety


Sir William Siemens Square is open for business between 7.00 am and 8.00 pm Monday to Friday. If you need to be in the office outside of these hours, please inform security on 01276 696 191. Security is provided 24 hours a day, 7 days a week throughout the year. A team of security guards patrol the grounds and use the latest CCTV technology to monitor the site to ensure it is a safe and secure place for all Siemens employees and visitors.

Health and Safety

A range of appropriate processes and procedures are in place to manage health and safety on site. First aid arrangements - please contact Reception if you require first aid. Fire arrangements - please make sure you understand the required evacuation protocol.

Fire Alarm

The fire alarm is tested every Tuesday at 08.45 am. It is a voice message alarm, so please follow all instructions as given. In the event of a building evacuation, the meeting points are located either side of the main gate in front of the car park area.