Contact Us Sumac is not accepting new projects at the moment, but please get in touch if you want to discuss anything. View Larger Map Sumac UK Ltd Chelmsford Office Unit M2.02 Moulsham Mill Chelmsford Essex, CM2 7PX 0203 627 1730 info@sumac.uk.com You can also contact us using the form below. Required fields are marked by an * Name Email Telephone Message