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Excellent picture Martin. Is the colour slightly 'warmer' (intense) than Nature?
I think you may be right about the colour being tweaked. I don't think I changed the hue but I may well have boosted the saturation a bit. I've added a second unedited image so you can see the change for yourself.
Lat/Lng: 52.061168, 1.159024
OS grid ref: TM166450
In my garden.