Gloucester Road, South Kensington — Wikimedia Commons / geograph. Street context near the hotel address.
order 3 of 5 for casino–hotel integration
Millennium Hotel and Conference Centre Gloucester London offers a clearly identifiable hotel–casino pairing.
This London pairing is included because the hotel and Grosvenor casino occupy the same Harrington Gardens address complex. It offers strong physical proximity without implying common ownership.
The hotel and casino are separately operated. A hotel reservation does not guarantee casino entry, and casino opening arrangements should be confirmed directly.
At-a-glance verified details
The practical facts separate the hotel from the casino operator.
- Integration
- Hotel and casino appear in the same Harrington Gardens address complex.
- Address
- 4–18 Harrington Gardens, London SW7 4LH / SW7 4LJ
- Hotel
- Millennium Hotel and Conference Centre Gloucester London
- Casino
- London–Gloucester Road Grosvenor Casino
- Operator
- Grosvenor Casinos Limited
- GC account
- 614
- Rooms
- 611 rooms, according to the hotel site
- Casino hours
- Check the official casino page before travel.
- Telephone
- +44 20 7373 6030
18+ A hotel guest is not automatically entitled to enter the casino. Casino entry requires the guest to be 18 or over and remains subject to identification and venue admission rules.
Four parts of the stay to verify
Rooms, dining, gaming and events each need a separate check.
A large Kensington hotel inventory
Atmospheric hospitality illustration prepared for this guide. It is not a photograph of the venue reviewed on this page.
The hotel site states 611 rooms across several categories, including accessible rooms and suites. Confirm the live category before booking.
Dining and bars sit inside the hotel programme
Atmospheric hospitality illustration prepared for this guide. It is not a photograph of the venue reviewed on this page.
Hotel dining and bar hours belong to the hotel operator. Nearby South Kensington also provides independent restaurants within a short walk.
Grosvenor Casino shares the Harrington Gardens address complex
Atmospheric hospitality illustration prepared for this guide. It is not a photograph of the venue reviewed on this page.
The Commission premises register lists London–Gloucester Road Grosvenor Casino at 4–18 Harrington Gardens, matching the hotel’s published address block.
Museums and exhibitions often drive the London itinerary
Wikimedia Commons — local street context.
Natural History Museum, Victoria and Albert Museum and Gloucester Road station sit close by, which can make this a practical base even if the casino is a secondary plan.
Licensed casino operation
Grosvenor Casinos Limited appears under Gambling Commission account 614.
The account reference is provided to help readers distinguish the casino operator from the hotel. Consult the public register and the live premises entry before travel; licences and trading arrangements can change.
Reading the London pairing carefully
Shared address complex does not mean shared ownership or shared admission rules.
Millennium Hotels operate the hotel. Grosvenor Casinos operate the casino. Guests should treat booking, dress expectations, opening hours and safer-gambling controls as separate conversations with each operator.
Historic stay-and-play promotions have appeared on hotel channels in the past. Any chip offer, voucher or package must be verified on the live hotel page for your dates; this guide does not republish expired promotions.
Visual atmosphere for rooms, dining and public spaces
These images set a hospitality mood; they are not official photographs of this property.
Official room, restaurant and casino photography belongs to the operators. Use their own sites for current images of this exact property.
Official sources support the details on this page.
Information last checked: 4 September 2026. This independent guide does not display live prices or availability.