Contact Us

If your comments concern personal health conditions or relate to medical issues, please consult your doctor.

Contact Sanofi UK

One Onslow Street

 0845 023 0441   Fax: 0800 471 8627

Contact about an Adverse Event

 0800 0902314 (Monday - Friday)   Fax: 0800 4716122

Please note, we cannot provide medical advice on your symptoms, if you are concerned about your symptoms, or they worsen, you should contact your doctor or healthcare provider.
Information on adverse event reporting to the UK Health Authority can be found at

Contact the Media team

  0845 372 6263
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Privacy Notice

We will only use the information collected in this form for the purposes of handling and responding to your request. We will not send you unsolicited marketing materials. In the event that you are reporting an adverse event, we may also use the information you submit to monitor the safety of our products and manage and report adverse events.
Aventis Pharma Limited, Genzyme Therapeutics Limited and Genzyme Limited are the controllers and responsible for any personal data you submit using this form.  We will process your personal data on the basis that it is necessary to perform a contract with you (to respond to your request), for our legitimate interests (to maintain business contacts) and to comply with legal obligations (monitoring adverse effects of products).
Please see our Privacy Policy for more detailed information about our data processing activities.

UK Operating Companies

Sanofi is made up of different legal entities and in the United Kingdom Sanofi conducts its business through the following companies:

Aventis Pharma Limited
Registered in England and Wales
Company number: 01535640
Registered office address: One Onslow Street, Guildford, Surrey, GU1 4YS
VAT number: GB 246 0798 43

Genzyme Therapeutics Limited
Registered in England and Wales
Company number: 04316333
Registered office address: 4620 Kingsgate, Cascade Way, Oxford Business Park South, Oxford, OX4 2SU
VAT number: GB 246 0798 43

Genzyme Limited
Registered in England and Wales
Company number: 01556886
Registered office address: 37 Hollands Road, Haverhill, Suffolk, CB9 8PV
VAT number: GB 246 0798 43