If I transfer ownership of my car to my friend, can bailiffs still clamp it?

Yes

If the debt is enforced under a High Court Writ, the enforcement officer being instructed to enforce the writ binds all the property in the debtors goods.^[1]

If the debt is an an unpaid magistrates' court fine, the bailiff being instructed binds all the property in the debtors goods.^[2]

If the debt is unpaid council tax or an unpaid traffic contravention debt, the debtor being given the statutory Notice of Enforcement,^[3][4] binds all the property in the debtors goods.^[5]

When the property in the debtors goods becomes bound, it means they cannot be sold or given away.^[6]

The only exception is when the buyer of the goods does not know the goods were bound under the enforcement power.^[7]

Otherwise, the debtors goods may still be taken into control by bailiffs, and the new owner makes a third-party claim.^[8]

^{[1] Paragraph 4(2) of Schedule 12 of the Tribunals, Courts and Enforcement Act 2007
[2] Paragraph 4(3) of Schedule 12 of the Tribunals, Courts and Enforcement Act 2007
[3] Paragraph 7.1 of Schedule 12 of the Tribunals, Courts and Enforcement Act 2007
[4] See Bailiffs attended without giving a Notice of Enforcement
[5] Paragraph 4(4) of Schedule 12 of the Tribunals, Courts and Enforcement Act 2007
[6] Paragraph 5(1)(b) of Schedule 12 of the Tribunals, Courts and Enforcement Act 2007
[7] Paragraph 5(2) of Schedule 12 of the Tribunals, Courts and Enforcement Act 2007
[8] See Making a third-party claim to controlled goods}