Generally similar to US regulation, depending on exactly what they mean by "sponsorships" Here, a "sponsorship" can sound an awful lot like an ad, as long as it doesn't contain a call to action ("stop in today!") or a comparison to competing providers. ("freshest produce in town"). ("Joe's Furniture has Acme office chairs in all colors. Their store at 123 Main Street can repair Lenovo and Dell computers. 212-555-1212.") would be legal.