Look for BRC accreditation. BRC Global Standards is a safety and quality programme used worldwide with a certification issued through a Global network of certification bodies.
The Standards guarantee the quality, safety and operations and ensure the fulfilment of legal obligations and provide protection for the end consumer. BRC Global Standards are often a requirement of leading retailers.
For temperature-controlled warehouses Chilled = 0° to 5°C, Frozen is < 0°C.
Please note that not all cold storage facilities will cater for both chilled & frozen storage requirements at the same site, so make sure to mention it to your Stowga specialist, so he can walk you through your options and advise on temperature ranges available in each location.