Hi Rita
On the face of it its not strictly OH but could be risk related / prevention for the carers and they would fall under the workplace health, safety and welfare regs.
So if your role is combined with H&S (as many practitioners are)

HSE                         http://www.hse.gov.uk/pubns/indg244.pdf

Workplace health, safety and welfare A short guide for managers

suggests: Lighting should be sufficient to enable people to work and move about safely.
            :Temperature - Individual personal preference makes it difficult to specify a thermal environment
             which satisfies everyone. For workplaces where the activity is mainly sedentary, for
                     example offices, the temperature should normally be at least 16 °C. If work involves
                     physical effort it should be at least 13 °C (unless other laws require lower temperatures)
                     Hot drinks: Where provided, eating facilities should include a facility for preparing or obtaining a
                     hot drink. Where hot food cannot be obtained in or reasonably near to the workplace, workers may need to                                                                                                                                     be provided with a means for heating their own food (eg microwave oven).
While these regs apply to workplace premises it also states Domestic premises’ - means a private dwelling. These Regulations do not apply to domestic premises, and exclude homeworkers. However, they do apply to hotels, nursing homes and to parts of workplaces where ‘domestic’ staff are employed, such as the kitchens of hostels.

You could always try the email enquiry facility for HSE

My thoughts? If the size of the bill is causing them to consider not having the lighting and heat for the carer then its a H&S issue and potential OH issue with any carer who then goes sick with an injury due to a fall (in the dark)  or gets a cold because they havent got an extra sweater! Not sure the TV bit is relevant.

Kind regards
Gail
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