SEO-Optimized Plumbing Booking Website

I run a plumbing-and-heating company that serves 36 different areas across the UK and offers 12 core services. I want a modern, clean site that lets customers send a contact form, captures their details through a simple booking form, and instantly sends them a confirmation email... (Budget: £20 - £250 GBP, Jobs: Content Management System (CMS), Google Analytics, HTML, PHP, SEO, Web Design, Web Development, WordPress)