Licensing and Legal Framework
Grosvenor Casino Portsmouth Gunwharf Quays operates under premises licences held by Grosvenor Casinos Limited, which appears in the UK Gambling Commission’s public register under account number 614. The Gambling Commission premises register lists two active premises entries for Grosvenor Casino Gunwharf Quays at Central Square South Building, Portsmouth, PO1 3TW. The local licensing body is Portsmouth City Council, as confirmed by the premises entries in the register. Both entries point to the Central Square South Building at Gunwharf Quays in Portsmouth, and they sit in the same physical cluster with the same operator.
Grosvenor Casinos Limited belongs to The Rank Group plc, based in Maidenhead. The online operation at grosvenorcasinos.com is run separately by Rank Interactive (Gibraltar) Ltd, a Gibraltar-incorporated company with registration number 120385. So the Portsmouth casino on the quay and the online casino share brand and marketing, but they sit under different regulators and legal setups. That separation matters if you move between playing on site and playing online.
UK gambling law sets the minimum age for entry to gambling areas and for taking part in gambling at 18. There are no carve-outs. Grosvenor Casinos Limited must comply with the UK Gambling Commission’s Social Responsibility Code, which covers identity and age checks, safer gambling messaging, and self-exclusion arrangements. The Portsmouth branch does not publish detailed safer gambling procedures on its own public pages. Anyone with concerns about risk, loss of control or self-exclusion should speak directly to venue staff or review the Gambling Commission’s information at gamblingcommission.gov.uk.
The Venue Itself
The Portsmouth Grosvenor casino sits on the first floor of the Gunwharf Quays retail and leisure scheme overlooking Portsmouth Harbour. It forms part of the complex’s evening and late-night offer rather than operating as a completely isolated building. In practice, that means it sits alongside shops, restaurants and other entertainment so a visit can easily be combined with other plans.
Most public-facing sources give the address as Gunwharf Quays, Portsmouth, PO1 3TZ. The Gambling Commission record, however, references Grosvenor Casino Gunwharf Quays R19 & Lo5 Central Square South Building, Gunwharf Quays, Portsmouth, PO1 3TW for the licensed units. The difference comes down to how individual units and postcodes are carved up within one large building rather than separate locations or branches.
Reaching the casino is relatively straightforward. Portsmouth Harbour rail station is within walking distance and local buses stop around the Gunwharf area. Drivers can use the Gunwharf Quays car park, which serves the whole complex. For anyone planning around a specific start time - a poker tournament, for example, or a group dinner - building in extra time is sensible, as the wider site becomes busy on Friday and Saturday evenings.
| Detail | Information |
|---|---|
| Operator | Grosvenor Casinos Limited |
| Parent Group | The Rank Group plc |
| Address | Gunwharf Quays, Portsmouth, PO1 3TZ / PO1 3TW |
| Licensing Authority | Portsmouth City Council |
| Regulator | UK Gambling Commission |
| Phone | +44 23 9273 2277 |
| [email protected] | |
| Website | grosvenorcasinos.com/local-casinos/portsmouth-gunwharf-quays |
Gaming Floor
On the main floor, the Gunwharf Quays casino offers core UK table games: American roulette, blackjack and Super Stud Poker are listed among the staples. The venue also hosts jackpot slots. One directory lists roughly ten slot machines and ten live tables. That headcount looks plausible but may now be out of date, and it is better treated as a ballpark figure than a fixed layout.
Poker is a significant feature here. The room is described as having around 100 seats and appears in the Hendon Mob poker database under “Grosvenor Portsmouth Gunwharf” as an active venue. Various sources mention regular poker activity and tournaments, but there is no consistently updated, official schedule in public view. Timings and formats shift over time. Anyone planning a visit primarily for poker should call the casino directly and ask what is running on the day.
Electronic gaming terminals sit alongside the live tables. Visit Portsmouth uses the phrase “high-tech gaming equipment” when referring to the venue, although public documents do not go into hardware specs, machine types or software providers.
Hours and Entry Conditions
The official casino page states Open 24 hours daily, with live tables operating from 1pm to 4am Sunday through Thursday, and from 1pm to 5am on Friday and Saturday, so the full gaming floor is not active around the clock. A separate Gunwharf Quays complex listing shows 7pm to 2am, which most likely reflects the bar and restaurant hours rather than the whole gaming floor. Third-party directory sites publish their own variations alongside these.
Because of those differences, the safest way to plan is to confirm current hours directly with the venue, especially if the plan revolves around a particular part of the offer such as the kitchen, late bar, or a specific poker session.
Entry rules follow the standard pattern seen across UK-licensed casinos:
- Entry to gambling areas is restricted to those aged 18 and over.
- New visitors are normally asked to join or sign in when arriving.
- The stated dress code is smart casual.
- Door staff may request photo ID as proof of age or identity.
- Management can refuse entry under licence conditions or house rules.
A simple practical tip for anyone not used to UK casinos: bring valid photo ID even if you are clearly over 18. Staff are required to apply age verification consistently. Producing ID at the door is easier than being turned away or limited in what you can do on site.
Planning Your Visit
The two sets of hours — the 24-hour gaming floor and the more restricted table window — mean it is worth thinking about what you actually want from a trip before you arrive. If live tables are the priority, arriving before 1pm means the gaming floor is open but table play has not yet started. Late arrivals on a weekday should note that tables close at 4am, while weekend sessions run an hour longer to 5am. Combining a meal at the restaurant with an evening at the tables is straightforward given the venue’s position within the Gunwharf Quays complex, where parking, transport links and other leisure options all sit close together.


