Update from me in South Wales valley (literally in the middle of the red warning zone).
I had a phone call from the flood alert services at 4am this morning to say prepare for imminent flooding and to be ready for evacuation. At 4am the flood siren started going off and is still going.
2 miles either side of us are underwater. We are still ok despite the River Taff being a few metres away but due to road closures I don't think we can leave!
No power cuts here yet. Bags are packed and bag for dcat2. Have taken as much upstairs as we can. I can't help but feel a bit helpless and in future will have an emergency bag packed ready.
Dcat1 is still not home either. 
We're lucky that our home hasn't flooded (yet) but I'm devastated for everyone who has been. Our local community will struggle to come back from this for a long time.