UK ICO Codes of Conduct Guidance

The ICO is committed to encouraging the development of codes of conduct and will provide advice and support from the start on: 

• meeting the necessary criteria;
• the requirements of the GDPR; and
• complex areas of data protection.

The ICO welcomes informal discussions with organisations as part of their  development of their code of conduct and prior to formal submission.

https://ico.org.uk/for-organisations/guide-to-data-protection/guide-to-the-general-data-protection-regulation-gdpr/codes-of-conduct-detailed-guidance/