Contact us If you have a CSCS Registration Number, please have it with you when you contact us. If you want to apply for a CSCS card it is important to check here which one is right for you. If you have questions about the scheme please visit the FAQ‘s section of the website. If you cannot find the answer to your question you can email us using the form here. We will try to respond to your email within five working days. You can also call us on 0344 994 4777. The helpdesk is open from 8am to 6pm Monday to Friday, excluding Bank holidays. Or you can write to us at CSCS Ltd, Coalfield Way, Ashby-de-la-Zouche, LE65 1JF.