Can bailiffs take my children's TV?

No

Bailiffs cannot take Anything belonging to a person under 16,^[1][2][3] or anything that does not belong to the debtor.^[4]

Televisions and wall-mounted display devices don't fetch any money at auction, and bailiffs have no real interest in them.

Bailiffs may enter a Child's bedroom, but when he discovers it is a Child's bedroom, he should withdraw without interfering with the child's goods.

If a bailiff interferes with a Child's bedroom, he is doing so to annoy the householder, and to coerce them to give money, even if the debt is not owed by that householder.

Bailiffs are liable for wrongful interference with goods not belonging to the debtor.^[5]

^{[1] Regulation 2 of the Taking Control of Goods Regulations 2013
[2] Regulation 10(1)(a) of the Taking Control of Goods Regulations 2013
[3] Paragraph 64 of the Taking Control of Goods: National Standards, April 2014
[4] Paragraph 10 of Schedule 12 of the Tribunals Courts and Enforcement Act 2007
[5] Section 3 of the Torts (Interference with Goods) Act 1977}