iOs 8.4 Photos no longer upload to iCloud
I have an iPhone 6 and use iCloud Photo Library. Since upgrading to iOS 8.4 this morning photos no longer upload to iCloud. The Photos app just says "10 photos to upload", then "Uploading 10 photos", then back to "10 photos to upload" and then "Uploading 10 photos" — it's stuck in this loop. I've given it many hours now and no photos since the update to iOS 8.4 have uploaded.
I've tried fully quitting the Photos app and re-running it, no luck.
I've tried rebooting the phone, no luck.
I've tried force-rebooting the phone, no luck.
I'm now kicking myself for upgrading while on holiday.
Anyone else seeing this behaviour? Any ideas how to fix it?
Cheer
Dave
iPhone 6, iOS 8.4, 128GB