Yesterday, although officially the first day of Autumn, was 25 degrees C and sunny - a perfect Summer day by London standards, but I spent the day tidying up in the garden and removing Summer bedding that run its course. Today, Autumn has arrived in full force and by tomorrow night, we will have lows of 7 degrees.
So, soon the central heating will come on. I wouldn't normally put it on until October (I still have doors and windows open), but I know I will have complaining guests otherwise.
We're not much into seasonal decorations here, outside of Christmas and a bit for Halloween, but I made a little Autumn wreath for the front door.