Here I am referring to TV broadcasting channels such as Sky TV who have a service called 'On Demand', now I have heard numerous people including family members say something like this:

'We can watch this on on demand'

Note the double use of the word on here, I find this quite unusual as saying it twice just seems a bit weird, does the second on substitute the first one? Or is this just fine?

  • We can watch this on "On Demand". – user66974 Oct 18 '16 at 13:54
  • That doesn't answer my question does it? – user3574492 Oct 18 '16 at 13:56
  • @user3574492 Yes, it does. In Josh's example, "On Demand" is a proper noun, indivisible, with a fixed meaning independent of its component words. Just like "HBO" is. Just as "I can watch this on HBO" is not a problem grammatically or syntactically, neither is "I can watch this on On Demand". – Dan Bron Oct 18 '16 at 14:05
  • "On-Demand" is the name of the service and therefore a proper noun. While double "on" is probably not needed to convey meaning, it is technically correct. – Skooba Oct 18 '16 at 14:06

If the Sky TV service is named "On Demand" and your family members refer to this service:

'We can watch this on On Demand'

This would be correct as it is a personal name.

But if your family members refer to the general availability on the internet they should use:

'We can watch this on demand'

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