Which former Dragons' Den investor founded Red Letter Days?

Rachel Elnaugh founded Red Letter Days before becoming a Dragons' Den investor.

Red Letter Days was an experience-gift company that sold vouchers for activities and unusual outings. Its concept helped popularise experience-based gifting in the UK, offering customers alternatives to conventional physical presents.

Elnaugh joined the original UK Dragons' Den line-up and brought experience as an entrepreneur and business founder to the panel. Her connection with Red Letter Days is often remembered alongside her television career, although the company later experienced serious financial difficulties and was sold after entering administration.

The answer is Rachel Elnaugh, not Deborah Meaden or Sara Davies. Those entrepreneurs are also associated with the UK programme, but they founded different businesses and joined the panel at different times. Red Letter Days is the specific company linked to Elnaugh's entrepreneurial profile.