Forget the John Lewis Christmas advert – this year's tear-jerker comes from Poland, the Telegraph reports.

Two and a half million people from around the globe have watched this year's advertisement from Allegro, an online auction website.

It features a grandfather, who orders an 'English for beginners' set from the website.

The elderly gentleman even practises loudly on the bus, bemusing those around him.

He seems particularly keen to learn how to introduce himself, and to say "I love you" and "you are perfect".

For those wondering why he is putting so much effort into learning English, the reasoning soon becomes clear.

His son appeared to have moved to England, and married an English woman.

The two have a child together, the old man's granddaughter.

At the end of the advert, we see him introducing himself to her: "Hi. I am your grandfather".

The advert has touched people around the world.