I used Maslins for my limited company from setup through to strike-off, and they were excellent throughout. Mike and Cameron were my main points of contact and both were great - knowledgeable, quick to respond, and easy to deal with. Emails answered the same day, often within the hour, which is not the norm in this industry.
They're also genuinely proactive. Around VAT quarters and year-end they'd review my FreeAgent data and flag things before I'd even thought to ask, which meant I never had to worry about deadlines creeping up on me. The FreeAgent integration is a real strength - everything lives in one place, the software is designed for non-accountants, and it made the admin side of running a company about as painless as it can be.
When I closed the company down, they handled the final corporation tax filing and the DS01 process cleanly and without fuss. They're a small, employee-owned team in Tunbridge Wells, and it shows in the quality of the service. You deal with actual qualified accountants who know your file, not a rotating cast of juniors. If you're a contractor or freelancer running a limited company, I'd recommend them without hesitation.