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This playbook explains how we use social media at GDS. In it, we share our best practice, what we've learned and what we're planning to do.

• Updated: 23 January 2023

How to register your medical devices with the MHRA for the markets in Great Britain and Northern Ireland.

• Updated: 16 January 2026

Visiting a prisoner: visiting times, keeping in touch by email, telephone or letter, banned items and sending money to a prisoner by debit card or online bank transfer

• Letters, video and telephone calls

  Letters You can contact a prisoner by writing to them. Write the person’s…

• Email and social media

  Prisoners are not allowed to access social networking websites (such as…

• Banned items

  You must not send or give anything to a prisoner that: is indecent or…

• Sending money

  You can send money to someone in prison by making an online payment by…

• Visiting someone in prison

  You can make an online request to visit someone in prison in most cases.…

A series of 'how to' videos to help you access and use your eVisa, as well as updating and recovering your UKVI account.

• Updated: 21 January 2026

Information about moving to, living or retiring in the USA – including visas, working, healthcare and driving.

• Updated: 11 December 2025

Watch our caseworkers' top tips to make sure your applications are complete and correct. Avoid more than 20 common requisition points.

• Updated: 22 January 2024

Find out how you should prepare for a telephone or video court or tribunal hearing and what to expect on the day.

• Updated: 23 July 2021

How to apply for a certificate of free sale to export medical devices outside the UK.

• Updated: 13 March 2025

How to book and make a secure video call with somebody in prison.

• Updated: 23 July 2024

Learn more about getting started with Self Assessment including registration, tax returns, tax bills and payments.

• Updated: 23 December 2025