Cheers Mike! We went with illustrations because it's hard to find pictures of builders that obviously are builders but don't look too much like stock photography. Guys with hard hats is a classic, it just looks bad and real builders don't often use them. With illustrations you can get away with exaggerating certain features without it looking too cheesy.

I did all the illustrations in Sketch too. Has anybody found any decent tutorials for Affinity designer yet? I still haven't had time to get to grips with it.