Is there a Legal Temprature that workplaces must be for employees to legally work?

It's obviously been freezing lately. I work in an Office building and I'm one of two people who work in there, the place is about the size of a large flat

The owners who rent the building don't have heating and in my office space there's space heaters we use, but during the winter it gets unbearable that we're wearing coats, scarves and gloves

Can occasionally see our breaths

The other day I went into work and booted my laptop up and I was met with a temperature warning from my laptop stating that the battery was at risk of damage and to move to a warmer temperature

I'm not sure if employers are supposed to provide central heating or if there is temperatures that are too cold to work in?

Any information or advice regarding that would be helpful..thank you :)