Here's an exclusive look inside a block of 3 luxury flats, each with secret features

London's luxury property market is still cracking out a raft of sumptuous homes but in order to make these properties stand out, housing investors are turning towards professional architecture and interior design companies.

Secretcape decorates the interiors for £10 million ($14.2 million) to £300 million homes around the world.

Mathilde Allibe, the CEO and founder of the elite architecture and interior design company Secretcape exclusively showed Business Insider around her latest project, which took 2.5 years to complete.

She was hired by a Middle Eastern couple who bought out an entire block of 6 flats and turned them into 3 insanely decadent apartments.

Allibe has several teams that work for her all the way through design, architecture, project management, finances, and aftercare. The latter is a team that helps clients move in, once the project is completed. Her clients give her budgets of "millions, not one million" to design the inside of a house. Some give a limitless budget.

Here is an exclusive look inside 30 Pont Street in Sloane Square: