The requirements upon S4C include ensuring that S4C's television and on-demand programme services comply with the requirements of the:

• the Ofcom Broadcasting Code;
• the Code on Television Access Services;
• the Code on the Scheduling of Television Advertising;
• the Cross-promotion Code;
• the Code of Practice on Electronic Programme Guides;
• the Code on Sports and Other Listed and Designated Events;
• Section 368Q of the Communications Act 2003, and (to the extent that such rules are relevant to S4C), Ofcom's on-demand programme service rules; and
• Ofcom's rules on Party Political and Referendum Broadcasts.

In addition, S4C is required to comply with a range of requirements including:

• Complying with the statutory provisions relating to the provision of information by S4C to Ofcom;
• Presenting an annual Statement of Programme Policy and an annual review of the policy to Ofcom;
• Complying with relevant quotas set by Ofcom relating to Original Programming, News and Current Affairs programming and access services (such as subtitles, audio description and signing);
• Presenting S4C's draft Code of Practice for Programme Commissioning for Ofcom's approval;
• Publicising Ofcom's functions in relation to the S4C television service, including procedures established by Ofcom or S4C for the handling and resolution of complaints about the S4C television service;
• Complying with directions given by Ofcom if S4C has failed to comply with its regulatory requirements; and
• To pay financial penalties to Ofcom for breaches of the requirements of the Ofcom Broadcasting Code and other quota requirements up to the amount of £250,000.

Further detailed information relating to these requirements can be found in Schedule 12 of the Communications Act 2003 on the legislation.gov.uk website.