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.

At EAVE our mission is to eliminate the loneliness and isolation that can be caused by hearing loss. We work to educate people working in noise about the associated risks and what they can do to avoid hearing loss. Our ear defenders are smart because they not only protect hearing while doing noisy work but they also collect easy to understand data on actual personal and environmental noise exposure. This data can then be used to reduce and manage risks related to Noise Induced Hearing Loss. 

We will use our technology to map the noise levels on the entire London Underground network on April 3rd while also educating travellers on the underground about the levels of noise they are being exposed to. We'll also be sharing simple tips and tools to help people protect and check their hearing.  

Sound Seekers delivers practical solutions to support people with hearing loss realise their rights by enabling access to healthcare and education. They do this by partnering with major hospitals and health service providers to improve the prevention, identification and management of hearing loss. Partnering with schools to improve the quality of education for children with hearing loss. Partnering with communities and wider stakeholders to raise awareness on hearing loss and advocate for equal opportunities for people with hearing loss. Sound Seekers improve the lives of thousands of people with hearing loss in some of the poorest communities in the world. They currently have projects in Cameroon, Malawi, Sierra Leone, The Gambia and Zambia.