Harry Potter fans young and old are in for a magical tweet this Christmas thanks to Marks and Spencer.

M&S has launched their very own Harry Potter collection ahead of the festive season including a Hogwarts Express advent calendar.

The box is shaped like the famous train that would send Harry, Ron and Hermione off to Hogwarts from Platform 9 ¾.

At the start of every school year the magical train would transports young witches and wizards off the Hogwarts where they would learn wizarding skills from potions to defence against the dark arts.

Glasgow Times: Harry Potter fans can now hop on board the Hogwarts Express thanks to M&S. (PA)Harry Potter fans can now hop on board the Hogwarts Express thanks to M&S. (PA)

Now fans of the books and film series can hop on board with their very own Hogwarts Express Advent Calendar.

As is expected from the retailer, the chocolates are not just any chocolates, they’re M&S chocolates - with a magical surprise.

The calendar includes 12 milk chocolate pieces with a gooey caramel centre, 12 milk chocolate balls and one special chocolate to enjoy on Christmas Day and it’s suitable for vegetarians.

The Christmas Day chocolate represents a one-way ticket to Hogwarts.

The calendar will set you back £12 available both online and in your local store.

Harry Potter fans react to M&S Hogwarts Express calendar.

The calendar has gone down a storm with fans of the series who can’t wait to get their hands on one.

Facebook group NewfoodsUK shared the new calendar with followers and quickly amassed over 2,000 comments.

"Ok 10/10 for packaging how CUTE," wrote one social media user.

Another joked: “mum, please can I have this advent calendar even though I am now 32?”

Another commented: “Get to M&S right now!”

With fans excited to buy their own Hogwarts Express on social media user warned: "These are going fast we got the last one in our M&S store on Sunday."

The calendar is part of a range of Harry Potter products available at M&S including Christmas tree decorations, board games and kitchen items.

You can check you the full Harry Potter range on the M&S website.