Pour remercier ce mystérieux donateur, l'association n'a rien pu faire d'autre que d'accrocher une banderole avec le mot « merci » au-dessus de la porte de leurs bureaux.
La campagne de presse de l'association pour rendre public ce don est aussi une manière indirecte de remercier ce donateur et d'encourager d'autres à suivre son exemple.
Man hands £20,000 in envelope to Cancer Research charity shop
Staff at Glasgow branch unveil banner thanking mysterious benefactor who delivered donation and left without saying a word
A mystery man walked into a charity shop and handed in an envelope with a £20,000 donation inside, then left without saying a word, it emerged today. Staff unveiled a banner at the shop with the words "thank you" to send a message to the mystery benefactor. Workers said it was the biggest donation they had "ever seen" at the shop. Volunteer Alexandra Macmillan, 48, was handed the envelope while helping at the Glasgow Cancer Research UK shop.
Ms Macmillan, who has been volunteering at the shop in Sauchiehall Street for nine years, said: "It was quite busy in the shop, so I thought he was just another customer. He didn't say anything, just smiled and handed me an envelope. Before I could say anything to him he had turned around and walked away.
"I took the envelope into the back room and gave it to the manager. We occasionally receive donations here, so I was hoping it might be a cheque for as much as £100.
"When we opened it up and found a banker's draft for £20,000 inside we literally couldn't believe what we were seeing. We had to read it several times before we were really sure we had just been given so much money."
Staff want to get a message to the generous man.
Shop manager Michelle Fulton said: "The man wasn't one of our regular customers and we didn't get the chance to say thank you, so we're all hoping he sees this and knows just how incredibly grateful we are for such a generous gift.
"I have been working at this shop for 15 years now, and this is far and away the biggest donation we have ever received.
"Occasionally, we are given a nice designer dress, or a cheque for a couple of hundred pounds, but this was in a different league altogether."
The envelope was handed in around three weeks ago.
Glasgow-based cancer researcher Dr Liam Faller, from the Beatson Institute for Cancer Research, said: "Cancer Research UK is entirely funded by the public, so donations like this are crucial to our work. We all want this mystery man to know that all the money he donated will be carefully invested in finding new ways to treat, diagnose and prevent cancer."
Other donations to the charity's shops from mystery people have included a copy of the first Beano annual, which was given to the St Andrews shop in Fife in April this year and a rare Hermès handbag, worth more than £1,500, which was handed in to the shop in Pitlochry, Perthshire, in October last year.
The Beano annual sold at auction for more than £4,000, a spokesman for Cancer Research UK said.