Letter from CDER Group? Here's what to do.

This guide explains who CDER Group Limited is, what its letters mean, the rules its enforcement agents must follow, and how to send it a formal letter by Royal Mail.

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CDER Group Company Details

Registered name
CDER Group Limited
Registered office
3rd Floor, 10 Lloyd's AvenueLondonEC3N 3AJ
Address for letters
PO Box 81793LondonEC3P 3GE
Companies House number
04118149
Enforcement Conduct Board
Accredited since October 2023

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About CDER Group

CDER Group Limited, company number 04118149, is a firm of enforcement agents. It was called J.B.W. Group Limited until 2020, so you may know it as JBW. Its registered office moved to 3rd Floor, 10 Lloyd's Avenue, London on 16 February 2026, and it is accredited by the Enforcement Conduct Board.

CDER says it collects council tax, parking, road traffic and road user charges, commercial rent arrears, business rates and magistrates' court fines for clients including local authorities, Transport for London, National Highways and HM Courts and Tribunals Service. GOV.UK names it as one of the firms that can employ Approved Enforcement Agents for court fines.

CDER Group's sister companies are Rundle & Co (Rundles), which enforces council tax and business rates, Court Enforcement Services, which enforces High Court writs, and Advantis Credit, a debt collection agency. You can write to CDER to pause enforcement if you are vulnerable, offer a payment plan, complain or challenge fees.

What CDER Group Enforces

  • Council tax and business rates
  • Parking, road traffic and road user charging penalties, including Clean Air Zones
  • Transport for London penalties and the National Highways Dart Charge
  • Magistrates' court fines for HM Courts and Tribunals Service
  • Commercial rent arrears

What a Letter from CDER Group Looks Like

  • A Notice of Enforcement from CDER Group, naming the creditor and your case reference.
  • A £79 compliance fee, which CDER says is added to each case once the Notice of Enforcement is issued.
  • Phone numbers including 0330 460 5295 for council tax, parking and most other cases, 0330 159 6553 for HMCTS court fines, and 0330 460 5297 for TfL and Dart Charge penalties.
  • Online payment through the CDER customer portal, or the HMCTS customer portal for court fines.
  • Webchat on the CDER website, open 8am to 4pm, Monday to Friday.

Your Rights with Bailiffs

Notice before a visit

For notices given from 1 May 2026, you must get at least 14 clear days' notice before goods are taken. If a debt advice provider asks before that period ends, it is extended to at least 28 clear days.

Fixed fees

For most debts, from 1 May 2026 the fees are £79 at the compliance stage, £247 plus 7.5% of the amount over £1,900 once an agent visits, and £116 plus 7.5% over £1,900 at the sale stage. High Court writs have their own scale.

Visiting hours and entry

Bailiffs cannot take control of goods before 6am or after 9pm. For most debts you do not have to let them in, and they cannot force their way in. Forced entry is only allowed in limited cases, such as some unpaid criminal fines.

What they cannot take

Items you need for your work up to £1,350 in total, and household essentials such as a cooker, fridge, washing machine and beds. They also cannot take goods that belong to someone else.

Children and vulnerable people

Bailiffs must not take control of goods if a child under 16 or a vulnerable person is the only person at home.

Read the full rules on our Letter to Bailiffs page

Common Situations

A Notice of Enforcement for council tax or parking

The council has passed the debt to CDER. For notices from 1 May 2026, you must get at least 14 clear days before goods can be taken. Use that time to pay, offer an affordable plan or get free debt advice.

A letter about a court fine

CDER enforces magistrates' court fines for HMCTS on its own phone line, 0330 159 6553. Fines are treated more strictly than council debts, and forced entry is allowed as a last resort. Contact CDER straight away.

A TfL or Dart Charge penalty

CDER has a separate line, 0330 460 5297, for Transport for London and National Highways Dart Charge penalties. If you think the penalty itself is wrong, also contact TfL or National Highways.

You cannot afford to pay in full

Offer an amount you can keep up, in writing, and ask CDER not to visit while you keep to it. If it will not agree, ask it to pass your offer to the creditor.

You are vulnerable or struggling

CDER has a Welfare Team on 0330 0414 800 and welfare@contactcder.co.uk. Tell it in writing about your circumstances and ask for enforcement to be paused and your case referred back to the creditor.

A call or text you are not sure about

CDER warns about scammers using its name and says to call its official number, 0330 460 5295, to check. Do not pay anyone until you have checked.

Complaining About CDER Group

You can complain to CDER online, by email to customercare@cdergroup.co.uk (or hmcts-complaints@contactcder.co.uk for court fines), by post to CDER Group, PO Box 81793, London, EC3P 3GE, by phone or by live chat. CDER acknowledges complaints within 2 working days, aims to resolve informal complaints within 5 working days and sends a final response to a formal complaint within 20 working days.

For events from 1 January 2025, you can then go to the Enforcement Conduct Board, within 3 months of becoming aware of the problem or 1 month of the final response, whichever is longer. For council and TfL debts, you can also complain to the council or TfL and then the Local Government and Social Care Ombudsman.

If You Are Struggling

CDER has a specially trained Welfare Team you can contact on 0330 0414 800 or at welfare@contactcder.co.uk. Tell it as early as you can if you are ill, have a disability, are bereaved or are struggling for any other reason.

Write to CDER Group by Post

Our Letter to Bailiffs is written from your answers in the letter builder. You choose what it does: ask for enforcement to be paused because you are vulnerable, offer a payment plan, complain about a visit, challenge the fees, or say that you do not owe the debt. Check the finished letter before you pay, then we print it and post it by Royal Mail.

  • Quotes the rules that apply to your request
  • Uses the fee scale and notice period in force since 1 May 2026
  • Gives the firm 14 days to reply in writing
  • Says where you will take your complaint next

Write to the Bailiffs

  • Guided step by step in the letter builder
  • See the finished letter before you pay
  • Printed and posted by Royal Mail
  • Tracked delivery available
Start Your Letter to the Bailiffs

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Frequently Asked Questions

Yes. CDER Group Limited is a firm of enforcement agents, registered at Companies House under number 04118149 and accredited by the Enforcement Conduct Board. CDER warns about scammers using its name, so check by calling its official number, 0330 460 5295.

Get free debt advice

A free debt adviser can help you work out an affordable offer, ask for more time before a visit, or apply for Breathing Space, which pauses most enforcement for 60 days.

Find free debt advice

Other Bailiff Firms

Bristow & Sutor

Redditch enforcement firm collecting council tax, business rates, parking penalties and High Court writs.

Read the guide

Marston

One of the largest UK enforcement firms. Collects council tax, court fines, parking and High Court debts.

Read the guide

Jacobs Enforcement

Birkenhead enforcement firm in ColX Group. Collects council tax, parking penalties and court fines for HMCTS.

Read the guide

Equita

Enforcement firm in ColX Group, formerly owned by Capita. Collects council tax, parking and High Court debts.

Read the guide

Put it in writing to CDER Group.

Answer a few questions, check your letter, and we print and post it by Royal Mail.

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