A finance company repossessing a car does not need to instruct bailiffs to take the car.
Bailiffs are only needed when taking control of goods, or property in the case of a demised tenancy or squatting event, that do not belong to the creditor.[1]
The lender does not need bailiffs to repossess the car because the car is already theirs until the final payment has been made.[2][3][4]
The finance company can send anyone to collect the car, and that person does not need an enforcement certificate.
[1] Section 62 of the Tribunals, Courts and Enforcement Act 2007
[2] Helby v. Matthews [1895] AC 471
[3] Mulwanyi v Newlyn Plc
[4] See Bailiffs and hire-purchase cars
Protect your car from bailiffs | Recover Your car from bailiffs | Attending a bailiffs vehicle pound | Reclaim bailiffs fees | Getting a chargeback | Attending Court | Arrested? | Bailiff Law | Trace a bailiff | Your bailiff FAQs | National Bailiff Advice | Beat the Bailiffs | BailiffTALK | About Stop the Bailiffs