Knowing the heater system on Chippies, I doubt there'd be many English or Irish-based Chippies at Perth at this time of year!
Wot heating system?
In common with most Chippys, our's doesn't have a heater. I think heaters were added to the last ones in RAF service a few years before they were sold off. Our's pre-dates that by some years.
It's not too bad in the front, but VERY cold in the back in winter.
SSD