In the BBC programme Dragon's Den, which Dragon founded the company Red Letter Days?

Rachel Elnaugh founded the experience-gift company Red Letter Days.

Elnaugh established Red Letter Days in 1989. The business sold vouchers for memorable activities and experiences, offering alternatives to conventional physical presents. Its model helped popularise experience-based gifting in the United Kingdom.

She became one of the original Dragons when the British version of Dragon's Den launched. Elnaugh left the programme after its first series, and the company later encountered serious financial difficulties before its brand and assets were acquired by other businesses.

The history is often simplified by saying that Elnaugh merely ran Red Letter Days. She founded it, but later ownership changed. This also explains why the brand is linked both with Elnaugh's Dragon's Den appearance and with subsequent business owners.