- Who
- Sense, Mazars UK
- What
- 390 people
- Where
- United Kingdom (London)
- When
The largest tactile signing lesson consists of 390 participants and achieved by Mazars UK and Sense (both UK), in London, UK, on 2 October 2018.
The attempt took place as part of Mazars National Challenge Week 2018 in support of the national disability charity Sense.