And finally…Scots kids cashing in as UK takes Tooth Fairy for £20m each year

The new research from insurance giant SunLife found that the Tooth Fairy leaves £1.31 on average, and with an estimated 15 million milk teeth falling out each year, that means a staggering £19.6 million being hidden under pillows.

SunLife also found that the Tooth Fairy is more generous is some parts of the country than others.

Scottish children receive the most - £1.78 on average – while children in the East Midlands receive the least - £1.07 for each tooth.

The most common coin left in the UK is £1 with 48 per cent of children who are visited by the Tooth Fairy finding the emblematic coin under their pillow.

The North East is the only region where £1 is not the most common amount - there 40 per cent of children get £1 and 44 per cent get £2.

In Scotland and the South West, one in five receive £2, while in the East Midlands, one in five get just 50p when they lose a tooth.

Overall, the Tooth Fairy is more generous in the North of the country and she is busier too.

In Yorkshire and Humberside, 78 per cent of under 11s get visits from the tooth fairy, 76 per cent in the North West and 75 per cent in the North East. The frequency drops in the South, down to 74 per cent in the South West, 66 per cent in East Anglia and just 50 per cent in London.

Ian Atkinson at SunLife said: “It is interesting to see that the tooth fairy is more generous in some parts of the country than others – maybe she visits certain towns and cities before others, so she has less money left towards the end of her journey.

“But when you take the average amount children are receiving for a lost tooth, most will have around £26 by the time they’ve lost all their milk teeth, while children in Scotland will have around £35 and some will have £100 - a good amount to save for a rainy day.”