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.
Egremont
Egremont is a market town, civil parish as well as 2 selecting wards (North as well as South) in the Borough of Copeland in Cumbria, England, 5 miles (8.0 kilometres) south of Whitehaven as well as on the River Ehen. Historically in Cumberland, the community, which lies at the foot of Uldale Valley as well as Dent Fell, has a long commercial heritage consisting of dyeing, weaving and iron ore mining. It had a population of 7,444 in 2001, boosting to 8,194 at the 2011 Census. The town's format today is similar as at the time of Richard de Lucy around 1200 with its broad Main Street opening out into the marketplace place. The remains of the Norman castle, integrated in the 12th century, are situated at the southerly end of Main Street near the marketplace area. Egremont was granted a charter for a market and yearly reasonable by King Henry III in 1266. The resulting yearly Crab Fair currently holds the World Gurning Championships. The contemporary economic climate is improved solutions, media and tourist, along with nuclear sector at Sellafield.