Did the job there and then without an appointment. Very quick and professional and reasonable price too - would highly recommend.

We had been let down by another company and upon calling Sovereign Installation Services they came out within an hour (didn't charge a call out fee) found and fixed the problem.
I cannot rate them enough - excellent all round.

Quoted for a job. Said they'd do next morning. Didn't show and didn't call to explain. Wouldn't answer my phone calls. Didn't call me back. Left me stranded with no heating and I have a 7 month old baby.