I’ve been thinking about the materials for our (at this point hypothetical) extension and have just come across another interesting option. The product is the Moeding Longoton terracotta panel, which can be made to dimensions ranging from 150mm to 3000mm.
The idea is that these panels are used as an external wall system, on top of an aluminium support framework. The insulation goes behind this and the main supporting wall. This system provides colour, texture and weather proofing and is an alternative to brick or render.
Brochure for product: Longoton_09-08_en
Most of the back of the house is going to be white rendered fairly soon (fingers crossed!), while the front of the house is retained as the traditional Victorian brick with rendered bay. The red to cream colour range could be a nice reference to both the red brick and the white detailing and render, while also adding some interest and colour.