On an Irlam garden wall. I believe this to be the larva of the Harlequin Ladybird, Harmonia axyridis. A recently arrived invasive species, this insect has spread rapidly north and westwards since first sightings in the southeast of the UK.
Here in Manchester, where Princess Street becomes Brook Street, the River Medlock emerges from a culvert that has taken it below this part of the city centre. At first sight it seems devoid of life and dead save for a few marginal weeds. Closer inspection reveals the presence of many little fish. They were easy to see around the sandy area near the tyre.