More than 3,800 dining and retail outlets will offer discounts of up to 29 percent to celebrate the 28th anniversary of Hong Kong’s return to the mainland on July 1.

This marks the highest number of participants since the annual campaign began two years ago.

Shops that have agreed to take part include fast-food chains McDonald’s, Café de Coral, Fairwood and Maxim's, supermarkets Wellcome and ParknShop, and convenience stores 7-Eleven and OK.

A number of eateries, including 16 restaurant brands of Tai Hing's, will provide across-the-menu discounts for dine-in customers on July 1.

Several restaurants will offer week-long discounts.

Catering sector lawmaker Tommy Cheung said the campaign is not about boosting business but about showing support for the SAR.

He noted that he had received positive feedback on past occasions and expressed confidence that many Hongkongers will remain in town to spend.

“I have a lot of good comments from people on the streets telling me that now with 30 percent off, they don't need to go to Shenzhen, Dongguan or other places,” he said.

"Which is why this year we're asking more restaurants and hoteliers to join.”

A lot of mainland tourists will also be lured here by the campaign as a result, he said.

Additionally, some eateries, including Tao Heung, will also offer discounts on meals specially designed for the elderly.

Cheung said such a move was to support the government’s push for the silver economy.