The Twitter account of Spain's royal family has published photos of King Juan Carlos I offering his letter of abdication to the country's Prime Minister, Mariano Rajoy.
Juan Carlos, who has been on the throne almost 40 years, will be replaced by his son, Crown Prince Felipe.
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Passengers, including a pregnant woman, say they have been stranded since 4pm yesterday.
The boxer said it was the "least he could do" and even donated the £30,000 shorts he wore in his last fight against Devon Alexander.
By Sunday it should become drier with spells of winter sunshine but temperatures will still remain on the cool side.