Liking the look of the composite sheet but still fairly pricey unfortunately.
Currently leaning towards 15mm MDF as I can sand it to round off the edges of the doors etc, and then a Plastikote or equivalent satin spray paint to finish it off.
And I can get all that fairly easily and local.
Ikea have some nice looking units but it would get quite complicated as I need to build it in over a wheel arch, Propex heater and a huge Truma water heater that are both mated up to holes in the floor and wall, plus I have a cumbersome Waeco fridge that really needs a custom enclosure to hold it. Difficult to work out if the depth of the carcasses can be cut down without causing issues with drawer runners etc, so I think a ‘scratch built’ unit is going to cause less headaches.
For a new conversion where I can build everything in around the units they look pretty good though.