BK
I asked you to contact [a client], [who was] looking at saving costs relating to his security system and fire protection system, which you did straight away. He rang me to advise that the work had been to to a high standard, in a timely manner, at the figure quoted.
It is always a good when I recommend services to one of our clients and their feedback is so positive. This also helps cement the relationship we have with our clients.
Many thanks for your help, Mike. I would have no hesitation in recommending you to any of our clients.