Our way of saying 'Thank You'

Sigma knows the value of a referral and an excellent contractor is likely to know another who can benefit from working with us.

This is why we put in place our contractor referral scheme, which gives us the opportunity to thank our contractors who are actively spreading the word about Sigma and our services.

If you are a contractor and put a friend or colleague in touch with our team, please ask them to mention your name at the time of contacting us. Alternatively, you can contact us on their behalf.

Once the contractor has signed up with us and we have processed their first timesheet, you will be able to choose from the following gifts.


Caran d'Ache Fountain or Ballpoint Pen

This Swiss-made Ecridor Chevron fountain pen is an undisputable classic with its diamond engraved chevrons and palladium-coated finish.

Wine Bottles in Case Blank Labels

Case of Wine

We will send you twelve bottles of specially selected wine; you choose between red, white and rosé, or request a mixed case.

Your name *
Your name
Name of person you are referring *
Name of person you are referring
Please include country code