Apologies I haven't had chance to read the whole thread.
There is no minimum temperature, with the HSE requirement being a temperature that is "reasonable". There is a minimum temperature set out in the HSE "Approved Code of Practice" (ACOP), which employers can follow to demonstrate they are meeting the HSE legislation, in your case I assume this would be 13 degrees for severe physical work? If an employer chooses not to follow the ACOP then they need to demonstrate via alternative means how they are meeting the legislation set out.
The link below provides the key info you need:
http://www.hse.gov.uk/contact/faqs/temperature.htm
If the employer is not adhering to the ACOP then you would be within your right to know how they are demonstrating their compliance to the legislation.
There is no minimum temperature, with the HSE requirement being a temperature that is "reasonable". There is a minimum temperature set out in the HSE "Approved Code of Practice" (ACOP), which employers can follow to demonstrate they are meeting the HSE legislation, in your case I assume this would be 13 degrees for severe physical work? If an employer chooses not to follow the ACOP then they need to demonstrate via alternative means how they are meeting the legislation set out.
The link below provides the key info you need:
http://www.hse.gov.uk/contact/faqs/temperature.htm
If the employer is not adhering to the ACOP then you would be within your right to know how they are demonstrating their compliance to the legislation.