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.
Bedale
Bedale is a market town and civil parish in the district of Hambleton, North Yorkshire, England. Historically part of the North Riding of Yorkshire, it is positioned 34 miles (55 km) north of Leeds, 26 miles (42 kilometres) south-west of Middlesbrough as well as 7 miles (11 km) south-west of the county town of Northallerton. It was initially in Richmondshire and also noted in the Domesday Book as part of Catterick wapentake, which was additionally called Hangshire (so named from Hang Bank in Finghall and also because of the many hangings used to implement marauding Scots); it was split once more as well as Bedale remained in East Hang. Bedale Beck is a tributary of the River Swale, which creates among the Yorkshire Dales, with its control of agriculture and its associated little conventional professions, although tourist is increasingly essential. A selecting ward of the very same name exists, which ward consists of Aiskew parish and had a complete population of 4,601 at the 2011 Census. In October 2018 the town was twinned with Azay-sur-Cher, a community in the Loire Valley in France.