A good plastering company, as well as the repairing companies, need to have quite experience on the job. Several types of walls need different types of plastering work. Interior, exterior, guard wall plater, slabbing, spray plastering, screeding, floating, and more require special knowledge on them.
You can search, “plastering companies near me Ringwood or Croydon” on Google. You will get reliable sources to choose from the suggestions on the Search Engine Results Page.