Yes, if the refrigeration units are part of your equipment and not permanently fixed, they can be covered under Catering Equipment. Frozen goods stored inside are also covered—up to £3,000—against loss due to breakdown or power failure.
Built-in cooking equipment is considered part of your catering equipment. If it’s not permanently fixed and you are legally responsible for it, you can include it under your Catering Equipment cover—up to £10,000, with a £500 single item limit.