Your comments are important to us, so if you need to contact us, please use the following options:
Frequently asked questions about our programmes, including how to get audience tickets or take part in a show. Features useful information on technical and transmission issues, audio description, subtitling and signing.
Browse our frequently asked questions on how to get started, or take a look at our Technical and Troubleshooting section if you're experiencing more difficult problems with Catch-Up on Channel4.com
General information about Channel 4 and how to apply for information under the Freedom of Information Act. Also, how to send us your enquiry, complaint or feedback.
Channel 4 is dedicated to creating the next generation of Radio, that's why we've launched 4Radio. Browse our frequently asked questions to find out more about 4Radio, including how to register and start downloading programmes.
Are you new to 4oD and need help? Browse our frequently asked questions on how to get started, or take a look at our Technical and Troubleshooting section if you're experiencing more difficult problems.
New to Channel4.com or having problems accessing our online content? Need help registering, or just want to know more about what's on the site? Find answers to the most frequently asked questions here.
Everything you need to know about accessing Channel 4's content on your mobile. Wherever you are, keep up-to-date with Channel 4's mobile site, where you can access the latest video clips and exclusive previews from Channel 4 shows.