Zen Internet has been handed a Best Buy award from Which? for the seventh time.
On this occasion, the gong was for the best customer service and support for any UK broadband ISP for March.
The five stars which were placed next to Zen's name were the results of votes taken from broadband subscribers.
Richard Tang, Zen Internet's Managing Director, said: "Zen Internet's mission is to provide the best ISP service in the UK and this award demonstrates our commitment to delivering excellent service, quality and reliability to our customers."
Zen has now come first in the customer satisfaction table for the past four years, with voters asked whether they would recommend the company to a friend as part of the survey.
The news comes less than a year after Zen was named the Best Broadband Provider 2008 in June's Which? Awards Ceremony held at London's British Museum.