Reminders won't sync with iMac

[baxlobs]

I have had an iMac for a while and recently bought an iPhone 5S.

I have managed to get Photos and Calendar to sync OK between them, but can't find any way to get Reminders to sync.

I have set up a Reminder on the Mac but nothing appears on the iPhone. As far as I can see everything is properly enabled on both sides and in iCloud.

What am I not doing or doing wrong?

 

[baxlobs]

I have solved it.

I did not notice that the test reminder I set up on the Mac was under btinternet, not iCloud.

Having set up another under iCloud it immediately synced to the iPhone.