The UK FSM market is led by tools at different tiers. Tradify and ServiceM8 target sole traders and small teams who want simple job management and a slick mobile workflow. Joblogic and Commusoft sit a tier up, built for growing and commercial contractors with planned-preventative-maintenance (PPM) contracts, asset tracking, and compliance reporting.
For call handling to be useful, it has to write back into the FSM tool, creating the customer, the site, and the job in the same fields the office already uses. Otherwise every booking becomes manual data entry.
Callsy integrates with Joblogic, Commusoft, Tradify and ServiceM8 so that when its AI receptionist books a job, it lands directly in the diary, not in a separate inbox. That covers the bulk of the UK trades software market across both the sole-trader and commercial tiers.