Thanks for the great review Gordon
I liked the look of the set so much that I have just been out this morning and bought one and a 4825 also
On the way back from town, we passed our local firestation and they were having a charity car wash, and they were using a Scania pumper (sought of like this one) to provide the water, and washing the cars was a large turntable ladder engine (pretty much identical to the 4820) which had it's ladder extended, and was blasting the water out of it's monitor mounted on the basket bit at the end of the ladder.
I have never seen an engine like this in real life before, and I would have just loved to get a picture of it, but I didn't have the camera on me, and we didn't even get the car washed as it was pouring with rain