The Jumeirah Group has reopened the 186-room The Carlton Tower Jumeirah, in the heart of London’s Knightsbridge following an 18-month closure for refurbishment.

The 17-story building has been redesigned, with an extensive makeover costing £100m (€116.3m, US$141.1m).

The Carlton Tower has also reopened its 15,000sq ft members-only Peak Fitness Club & Spa which is spread across three floors, complete with a five-treatment room Talise Spa.

“The Peak looks set to retake its position at the forefront of London’s luxury wellness world,” said Ben Evans, director of fitness and spa, speaking exclusively to Spa Business, sister magazine of HCM.

Guests are offered a menu of spa treatments supplied by Aromatherapy Associates and Skin111 – additional product house partnerships are to be announced in the coming weeks.

Beauty supplier Lemi equipped the new facility while specialist thermal wellbeing firm Dröm UK helped install the thermal and wet areas. In addition, RKF Luxury Linen has designed a bespoke linen concept for the spa, restaurant and wider hotel, after collaborating with the Jumeirah Carlton Tower team.

The health club and spa are crowned with a naturally lit swimming pool with views through a double-height glass ceiling, lined with poolside cabanas.

The Peak offers studio classes and a gym with Technogym and Theragun equipment on the ninth floor, with panoramic views across the capital.

The five-star property riginally opened in 1961 as London’s first tower hotel and was celebrated for being the tallest in London at the time.

Originally designed by Henry End – also responsible for the interiors of the Plaza Hotel in New York – the refit was led by interior and architecture design studio 1508 London.

The design practice has drawn on the hotel’s heritage and location to create a modern classic with a "timeless, refined interior and sense of grandeur".

The hotel also has a new restaurant, lobby bar and lounge, ballroom and meeting rooms.