SMS Appointment Setter for UK warm leads

I run a small local-SEO agency in the UK. My clients are tradespeople - joiners, carpenters, kitchen fitters. I have around 90 warm leads sitting in my CRM who asked about my service and never got a proper follow-up, because I work a full-time job and cannot chase them during the day... (Budget: £175 - £200 GBP, Jobs: Appointment Setting, Customer Retention, GoHighLevel)