Workers at a leading chain of casinos are staging a second strike over pay.
Croupiers, cashiers, valets and restaurant workers at Grosvenor Casinos in London walked out for 24 hours from Thursday morning.
The Transport and General Workers' Union said there had been no progress in resolving the row over an increase to a 3.5% pay offer.
Grosvenor Casinos said it was disappointed with the union but said it would be "business as usual".
The union held its first strike over the issue last month when it claimed about 350 workers went on strike. The company said it was just 73.
Struggling to cope
Rose Keeping, the union's regional organiser, said: "Our members need an improvement on the 3.5% the company imposed on them at the beginning of January, especially in the light of inflation now at 4.4% and many feeling the 'real world' inflation rate is higher than that.
"Our members are still struggling to cope with significant increases in electric and gas bills, together with council tax and increases on mortgages and borrowing in one of Europe's most expensive cities."
Lesley Hughes, a spokesman for Rank Group Gaming Division which owns Grosvenor Casinos, said: "We are very disappointed the TGWU has called for a second day of action, particularly given the poor support they received for the first strike when only 73 employees, compared to the 300 anticipated by the union, chose to take industrial action.
"We would like to reassure our customers that it will be business as usual."
The strike affect Grosvenor's four top London casinos - Victoria Casino, on Edgware Road; Connoisseur in Kensington Gardens, London Park Tower in Knightsbridge, and Gloucester Sporting Club in Harrington Gardens.