The phrase "a service which is" is correct and usable in written English.
It can be used to describe a specific type of service or to provide additional information about a service being discussed.
Example: "We offer a service which is designed to improve customer satisfaction through personalized support."
Alternatives: "a service that is" or "a service which provides".
It's a service which is unique to one network but luckily, it's Orange.
This will result in a service which is 'patchy and inconsistent'.
It involves a service which is loss-making around the rural edges, but vital precisely to those areas.
Major internet companies, from Facebook to Google, provide us with a service which is ostensibly free, but which is funded in part by the sale and use of the data we provide by using the service.
The NHS was always supposed to be a service which is quite diverse, which involves communities, which involves people like you, which draws on the community and volunteering spirit.
"For those of you here today whose search engines provide links to software that enable people to steal songs from a service which is only licensed to stream, you are undermining the value of our music.
Oh Lord, here we go again: the NHS offering a service which was too late to be any use.
Over time, a service which was supposed to connect humanity is actually partitioning us into fractal disconnected bubbles.
Newly arrived asylum seekers would sometimes approach a service which was not designed for their presenting health or social care needs, which is unsatisfactory for the service user and provider alike.
Participants described lack of agreement about which Department should be responsible for funding a service, which was linked to the involvement of multi-disciplinary teams in the prevention of secondary fractures, both within the hospital and community care [ 16].
Hackers are getting clever, and now offer Phishing-as-a-Service, which is enabling more than 50,000 cyber thieves.
