You should pull up and remove weeds by hand as and when they appear. If it is a regular problem, you might need to reseal the paving. In extreme cases, the sub layer itself may need to be re-laid. You can use weed killer, however some paving can be discoloured by stronger weed killers.
Kingsbridge
Kingsbridge is a market town as well as tourist hub in the South Hams area of Devon, England, with a population of 6,116 at the 2011 census. 2 electoral wards birth the name of Kingsbridge (East & North). Their combined population at the above census was 4,381. It is positioned at the northern end of the Kingsbridge Tidewater, a ria that encompasses the sea six miles southern of the town. It is the 3rd biggest settlement in the South Hams and is 32 miles (51 km) south-southwest of Exeter. The town formed around a bridge which was integrated in or before the 10th century between the royal estates of Alvington, to the west, and Chillington, to the eastern, therefore giving it the name of Kyngysbrygge ("King's bridge"). In 1219 the Abbot of Buckfast was approved the right to hold a market there, as well as by 1238 the settlement had actually become a district. The chateau stayed in ownership of the abbot up until the Dissolution of the Monasteries, when it was given to Sir William Petre. Kingsbridge was never ever represented in Parliament or incorporated by charter, the city government being by a portreeve. It lay within the numerous Stanborough.