I've purchased 20m of cornice from UKHome Interiors, but my new decorator says he's unable to put it up as it involves complex mitering. However, the manufacturer claims it's straightforward so long as you have a mitreing block - which I do.
The builder / decorator I used previously was able to put up the cornice without issue. Unfortunately, he delivered very poorly in other areas (ie, failed to complete the work, damaged items in my home, disposed of building debris in neighbour's garden, etc). So, I wouldn't consider asking him to do this job.
What type of tradesman should I approach for this sort of work?