We are sorry your journey wasn't very comfortable.
Last year, we received a number of complaints from our passengers saying they felt unbearably hot when travelling on some of our older trains. To prevent that from happening this year we started disabling the heating on these trains.
If we leave this decision until later, we risk the carriages still being very hot during the warmer months.
We understand this is not helpful right now, while the weather is much colder than normal, however we hope that as we enter the spring and summer months you’ll notice the benefit of this decision.