Frieze week arrives on 14 October, and for five days the art world treats Mayfair as its dining room. The fair itself sits in Regent’s Park, but the late openings on Cork Street and Savile Row pull collectors south once the park closes, and it is a good week to keep our guide to which Mayfair art galleries open on a Sunday to hand. A fair number of those visitors finish the night where Mayfair visitors always have, at a table off Park Lane with a jacket on and a membership card at the desk.
Plenty of the same people now play from a phone in the hotel suite once the gallery dinners are over. For anyone who wants to see the licensed side of that habit laid out properly, Casinos.com keeps a ranked list of the best online casinos open to British players, with Mr Vegas at the top this month and every entry holding a Gambling Commission licence. What has changed this year is less the glamour of either option than the way Westminster treats them.
The numbers behind the velvet rope
The Gambling Commission published its figures for the year to March 2026 last month, and they put the two worlds in proportion. Every land based casino in Britain, from the Park Lane rooms to the provincial clubs, took £933.9 million in gross gambling yield between them, a rise of just 0.4 per cent. Online casino games took £5.7 billion over the same twelve months, and £4.8 billion of that came from slots alone.
The detail Mayfair regulars will recognise sits inside the land based number. Tables brought in £695.0 million and machines only £238.9 million, so roughly three pounds in every four still came from the roulette wheels and card tables. Regulations that came into force on 22 July 2025 loosened the limits on how many machines a casino can run against its tables. The money has not followed. The British casino floor remains a table business, which is the trade Mayfair built its reputation on.
The tax bill that changed in April
For most of the last decade the phone paid far less tax than the felt. A casino premises pays Gaming Duty on a sliding scale that starts at 15 per cent and climbs to 50 per cent on gross gaming yield above roughly £14.6 million in a six month period, a level only the busiest rooms in the country ever reach. Online operators, by contrast, paid Remote Gaming Duty at a flat 21 per cent from 2019.
That gap narrowed sharply on 1 April 2026, when Remote Gaming Duty nearly doubled to 40 per cent. The Treasury was unusually blunt about the reasoning. Its published note on the gambling duty changes says online slots and casino games are generally considered more harmful than other forms of gambling, and that the rise is meant to discourage operators from steering customers towards them. It expects the change to raise more than £1 billion a year by 2027 to 2028.
So the official view now runs against the common assumption. The heavily taxed, heavily supervised product used to be the one with a doorman. Today the government treats the app as the riskier of the two.
What a high roller actually gets on a screen
Anyone used to Mayfair stakes notices the difference quickly. Online slots have been capped at £5 a spin since 9 April 2025, and at £2 for players aged 18 to 24 since 21 May that year. No equivalent cap sits on a roulette wheel in Hamilton Place. Since 19 January 2026, any bonus from a UK licensed casino site has carried wagering of no more than ten times the bonus, and promotions can no longer bundle casino play with sports betting.
The checks feel different too. In a Mayfair room, source of funds questions arrive in person and scale with the size of the buy in. Online they arrive as a form. Operators run light touch financial vulnerability checks once a customer’s net deposits pass £150 in a rolling 30 days, and since July 2026 the largest operators have run fuller financial risk assessments at much higher spend levels. A player who moves between the two will meet the same anti money laundering logic in very different clothes.
Why the Park Lane rooms keep their pull
None of this empties the townhouses. The rooms off Curzon Street and Hertford Street sell something the figures do not count. A host remembers your name, and the kitchen would hold its own on the street outside. Above all, the evening has a beginning and an end. That last part matters more than it sounds. A club closes. An app does not, and the discipline a closing time once supplied now has to come from the player.
So during Frieze week, by all means let the gallery dinner run on to a table off Park Lane. If the evening continues on a phone afterwards, set a deposit limit before the first spin rather than after the tenth. The Treasury has already decided which of the two it trusts less, and it is not the one with the dress code.
