This is what is known as a "Walking Train" passing the Shell filling station on Dowson Road. The children who are all very well kitted out with red macs and wellington boots are presumably on their way to a pre-school nursery. These were followed a few minutes later by another train of similar length.
A pdf file on the KidsAllowed gives some rules for how a Walking Train should operate. It suggests among other things that:
The Walking Train Driver must set good behaviour standards and check for hazards whilst the Walking Train Conductor must ensure all children keep to the paths and do not trail behind.A contribution to Ruby Tuesday and Our World Tuesday.
When operating the Walking Train children should walk in pairs with the Walking Train Driver at the front and the Walking Train Conductor at the rear. Children should be positioned on the left away from the pavement kerb and a team member must be positioned nearest the kerb. Team members should hold hands with the younger children.
A team member will carry a back pack containing a supply of waterproof coats, mobile phone and First Aid kit.