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How to apply for a clinical trial including eligibility, phases, model IMPDs, costs and how to make changes to your application.

• Updated: 27 January 2026

British travellers to the US must register with the Electronic System for Travel Authorisation (ESTA) before their journey

• Updated: 21 December 2017

Apply to extend your Investor visa (Tier 1) or bring your family.

• Overview

  You can no longer apply for a new Tier 1 (Investor) visa. If you already…

• Extend your visa

  You may be able to extend your Tier 1 (Investor) visa for 2 years. Your…

• Family members

  Your family members (‘dependants’) can join you if you’re in the UK on…

Past and current clinical trials into therapeutic and antiviral treatments for COVID-19, how to take part, and which treatments have proven to be effective.

• Updated: 31 March 2023

Get help to classify pharmaceutical products used to treat or prevent diseases or ailments (in humans or animals), including comparators used in clinical trials and placebos.

• Updated: 22 July 2021

This guide provides information on statutory derecognition of a trade union

• Updated: 16 September 2020

The Intellectual Property Office offers different methods of accelerating the processing of your patent application.

• Updated: 23 January 2025

Guidance on labelling for medicinal products used in clinical trials.

• Updated: 5 February 2026

The Planning Inspectorate appeals casework portal - Terms and Conditions

• Updated: 17 March 2021

Applications received to amend the specification of a patent under sections 27 and 75 before the court and the Office.

• Updated: 4 February 2026