The gutters are rectangular section metal. It is important to replace like with like. Please do not use plastic gutters!

The downpipe is a single length of metal pipe with no joins. It is parallel to the wall all the way down.

Clanfield Gutter Repairs of Oxford replaced gutters at number 7 and several other houses:

Southern Guttering of Bourne End did number 10:

Modern gutters are likely to be powder-coated rather than painted. They should be black.

Getting a long single length of downpipe is likely to be difficult. Some companies do make downpipes with smooth joints though: