- Who
- iChild Limited, Royal Mail Group Limited
- What
- 606,049 total number
- Where
- United Kingdom ()
- When
The largest postage stamp design competition consisted of 606,049 completed submissions and was achieved by iChild Limited and Royal Mail Group Limited (both UK), London, UK, on 1 July 2021.
The competition was open to children aged 4-14 years of age across the UK.
