The one-day pop-up, located on Bateman Street in Soho, will offer beauty treatments including manicures and massages, while guests enjoy drinks and samples of the new products.
The treatments are designed to replicate the experience of consuming the new product, with the brand adopting a similar approach with its recent bubble wrap event at Westfield London.
The products include Fudge, which features dark chocolate chips, fudge and biscuit and Nut and Raspberry, a creation that comprises dark chocolate chips, caramelised hazelnuts and raspberry pieces.
Interested applicants registered for tickets through YPlan, with pre-booked tickets sold out and only limited walk-in slots available.
Albane De la Neuville, brand manager for Cadbury Dairy Milk, said: "We're so excited to bring the luxurious nature of Cadbury Dairy Milk Medley to life with this unique Cadbury Dairy Milk Medley Lounge.
"The pampering lounge is the perfect place for people to truly relax and experience what it feels like to bite into a new Medley bar."
Comment below to let us know what you think.
For more in-depth and print-only features, showcases and interviews with world-leading brands, don't miss the next issue of Event magazine by subscribing here.