Does a notice of enforcement have to have a name and address to make it legal?

Yes

Bailiffs must give the debtor a notice of enforcement at least seven clear business days before taking control of goods.^[1]

Regulations state the Notice of Enforcement must show the name and address of the debtor.^[2]

^{[1] Paragraph 7.1 of Schedule 12 of the Tribunals Courts and Enforcement Act 2007
[2] Regulation 7(a) of the Taking Control of Goods Regulations 2013}