Why bailiffs leave documents hanging from letterboxes or communal entrance

To attract an enforcement stage fee^[1] or second enforcement stage fee.^[2]

To find out if anyone has returned home and taken in the document.^[3]

Phishing and debtor tracing: To see if anyone calls the number, or scans the QR code printed on the document.^[4]

If the document is a controlled goods agreement after the bailiff has removed a vehicle from a highway, it must be in a sealed envelope addressed to the debtor.^[5]

Bailiffs should avoid disclosing the purpose of their visit to anyone other than the debtor. Where the debtor is not seen, the relevant documents must be left at the address in a sealed envelope addressed to the debtor.^[6]

^{[1] Regulation 5(1)(b) of the Taking Control of Goods (Fees) Regulations 2014
[2] Regulation 6(1)(c) of the Taking Control of Goods (Fees) Regulations 2014
[3] Contrary to Paragraph 52 of the Taking Control of Goods: National Standards, April 2014
[4] See Why Bailiffs letters have a QR code printed on them
[5] Regulation 15(5)(a) of the Taking Control of Goods Regulations 2013
[6] Paragraph 52 of the Taking Control of Goods National Standards, April 2014}