The Tube Challenge is the competition for the fastest time to travel to all London Underground stations, tracked as a Guinness World Record since 1960. The goal is to visit all the stations on the system, not necessarily all the lines; participants may connect between stations on foot, or by using other forms of public transport. The current record for fastest completion of the challenge is 15 hours, 45 minutes and 38 seconds that was set on 21 May 2015.

World Hearing Day is held on 3 March each year to raise awareness on how to prevent deafness and hearing loss and promote ear and hearing care across the world. Each year, WHO decides the theme and develops a brochure on the topic based on the best available evidence as well as advocacy materials such as posters, banners, infographics and presentations, among others. These materials are shared with partners in government and civil society around the world as well as WHO colleagues across the Organization. At its headquarters in Geneva, WHO organizes an annual World Hearing Day seminar. In recent years, an increasing number of Member States and other partner agencies have joined World Hearing Day by hosting a range of activities and events in their countries. WHO invites all stakeholders to join this global initiative.

British Society of Audiology is the leading UK organisation for all professionals integrated in the latest science and its application in improving people’s lives with hearing and balance problems. Their work focuses on the fusion of science and compassion for clinical delivery. They aim to advance knowledge, learning, practice and impact in hearing and balance to enhance care.