The correspondence address is only that, how do I prove that items there are not my company's stuff.

Make a Third Party Claim

Bailiffs may only take control of goods that belong to the debtor.^[1]

If bailiffs take goods not belonging to the debtor, the owner of the goods makes a third party claim to controlled goods.^[2][3]

If a bailiff has threatened to take control of goods that do not belong to the debtor, the owner can make a statement.

Template

Give a notice to the bailiff the goods are not the debtor's

Give a copy of the notice to the bailiff company by email and make a screenshot of the sent email capturing the time you gave it.

Send a copy of the notice by text message to the bailiff to his mobile and make a screenshot of the sent text message to record the time you gave it.

Keep all screenshots for your file.

^{[1] Paragraph 10 of Schedule 12 of the Tribunals, Courts and Enforcement Act 2007
[2] Civil Procedure Rule 85.4
[3] See: Make a Third Party Claim to Controlled Goods}