Roman Britain had a dense network of towns, ranging from larger settlements, like London and Cirencester, which also served an administrative function, to small commercial centres that had grown up along the roads and waterways. 罗马时代的英国城镇密集,既包括伦敦和赛伦塞斯特这样的大型定居点(它们还同时担负着行政管理功能),也包括沿陆路和水路发展起来的小型商业中心。