Certificate expiry dates are the most valuable field in the system. Every landlord certificate is a booking twelve months later, and a reminder in the right month brings it back with no selling at all.
Emergencies and installations cannot share one queue. A bathroom takes three days; if the diary does not protect that block, every call-out eats into it and the job that was quoted at a fixed price loses money.
Job sheets need photographs. A leak, the damage around it and the part that failed, recorded on site, is what an insurer will accept and what settles an argument months later.
Van stock decides the second visit. Knowing which fittings and which valve are on board is the difference between finishing today and coming back tomorrow at your own cost.