What is the full title of the BBC programme commonly shortened to Dragon's Den?

The full title of the BBC programme commonly shortened to Dragon's Den is Dragons' Den.

The British programme uses the plural possessive title Dragons' Den, referring to the den belonging to the panel of investor Dragons. Entrepreneurs enter the den to present their businesses and seek money in exchange for an ownership stake.

The show premiered on BBC Two in 2005 and is the British version of an international format originating with Japan's Money Tigers. Its title has been retained even as the composition and number of investors on the panel have changed over the years.

A frequent writing error is the singular possessive Dragon's Den, which is common in casual speech and in the topic label. The official programme title uses Dragons' with an apostrophe after the s. The American adaptation is titled Shark Tank rather than Dragons' Den.