Three quarters of Brits will swear loyalty to a company – after being given a free gift.
A poll of 2,000 adults found 79 per cent who have picked up some kind of giveaway will tell people about it.
With friends (72 per cent), partners (62 per cent) and parents (41 per cent) first on the list to be boasted to.
And the 'thrill' of picking up a treat on the house lasts for the whole day, according to 19 per cent.
Expert psychologists James Cornish and Greg Tucker have revealed the neurological tricks that make Brits’ eyes light up at the thought of getting something free.
The behavioural experts worked with M&S to create a video showing cafe customers reacting with joy after being given a free hot drink – by none other than Matt Willis.
