There are a few key elements to achieving the perfect Christmas advert.

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Thematically, you need an underlying message that reminds us of our common humanity.

A dash or two of humour is never remiss.

There should be a strong seasonal feel, but not to excess.

A compelling storyline with an air of intrigue is preferred.

Always include a dog. Always.

Bring lumps to throats and you're definitely on the right track.

And if you manage to seamlessly incorporate every single one of these features, well, you might just have a rival to this Polish online auction website's advert entitled "English for Beginners."