The National Lottery has published a list of 50 "unsung heroes" to mark its 15th birthday. So why does history remember some figures but forget others?
Can a man who has appeared on the £20 note really be classed as an "unsung" hero?
Plenty of people will have heard of Michael Faraday, even if they are not too familiar with his pioneering work in the field of electromagnetism.
The Victorian physicist tops a list of 50 Britons whose contributions to history should be better celebrated, according to the National Lottery.
See the full list here