Brand closed: Post Office Broadband no longer has its own support line. All former customer accounts are now run by TalkTalk.
There is no dedicated Post Office Broadband phone line in 2026. Former customers are now TalkTalk accounts. The main number to call is 0345 172 0088. Below is the full routing, the complaints escalation path and the Communications Ombudsman details if a TalkTalk complaint goes nowhere.
At a glance
At a glance
Contact
Updated 19 May 2026
Phone directory
All Post Office Broadband contact lines have been retired. The numbers below route legacy customers to the right team at TalkTalk, plus the independent escalation path.
TalkTalk customer service (legacy Post Office accounts)
0345 172 0088Mon to Fri 08:00 to 20:00, Sat 09:00 to 18:00
The main support number for anyone whose service started life as Post Office Broadband. TalkTalk handles billing, technical support and migration questions.
TalkTalk technical support
0345 172 0088Mon to Sun 08:00 to 22:00
For broadband faults, slow speeds, router issues or anything that stops the line working. Same number as customer service, option for tech support in the IVR.
TalkTalk complaints
0345 172 0044Mon to Fri 08:00 to 18:00
Dedicated line if customer service has not resolved your issue. Always ask for a written deadlock letter if a complaint is going nowhere, that letter unlocks the Ombudsman route.
Post Office HQ (corporate, not broadband)
0345 611 2970Mon to Fri 09:00 to 17:30
Post Office Limited customer relations. Does NOT handle broadband queries (which all sit with TalkTalk now), but can confirm the brand has been sold and route you correctly.
Communications Ombudsman (ADR)
0330 440 1614Mon to Fri 09:00 to 17:00
Independent alternative-dispute-resolution scheme. Free for consumers. Use after eight weeks of an unresolved complaint or once you have a deadlock letter from TalkTalk.
Complaints route
If you have a legitimate issue with anything that started as Post Office Broadband, here is the escalation path that gets results in 2026.
Call TalkTalk customer service
Call 0345 172 0088. Ask for a complaint reference number and the name of the agent. Note the date and time of the call.
If not resolved, escalate to the TalkTalk complaints team
Call 0345 172 0044 or write to TalkTalk, P.O. Box 346, Southampton, SO30 2PW. Reference the original complaint number.
Ask for a deadlock letter or wait eight weeks
A deadlock letter is TalkTalk’s formal "we cannot agree" statement. It unlocks the Ombudsman route immediately. Without one, the Ombudsman can still act after eight weeks of an unresolved complaint.
Escalate to the Communications Ombudsman (free)
Submit your case online at commsombudsman.org or call 0330 440 1614. The Ombudsman is independent, free to consumers and TalkTalk is bound by its decisions.
Postal contact
Written complaints carry more weight than phone calls if your case eventually goes to the Ombudsman. Send recorded delivery and keep a copy.
TalkTalk, P.O. Box 346, Southampton, SO30 2PW
Written complaints for any account that started as Post Office Broadband
Communications Ombudsman, P.O. Box 730, Warrington, WA4 6WU
Independent ADR scheme, for unresolved complaints after eight weeks
Post Office Limited, Finsbury Dials, 20 Finsbury Street, London EC2Y 9AQ
Corporate HQ, for non-broadband matters only
If you would rather leave entirely
One-Touch Switch makes it easy
Since September 2024, the UK telecoms market runs on One-Touch Switch. You only need to contact the new provider, they handle the cancellation with TalkTalk on your behalf, with no overlap and no gap in service.
If you are out of contract, leaving costs nothing. If you are still in contract, the new provider will tell you the exit fee before you commit, so there are no surprises. Compare live UK broadband alternatives on the Selectra providers page.
FAQ
No. The original Post Office Broadband customer service number (0345 600 3210) was retired after the 2021 sale to Shell Energy, and the Shell Energy Broadband line was retired in turn after TalkTalk’s 2023 acquisition. The current support route for any account that started as Post Office Broadband is TalkTalk customer service on 0345 172 0088.
Raise it with TalkTalk first on 0345 172 0044. TalkTalk inherited every open Post Office complaint when it acquired Shell Energy in 2023. If the issue is not resolved within eight weeks, or if you receive a written deadlock letter sooner, you can escalate free of charge to the Communications Ombudsman. The Ombudsman’s decision is binding on TalkTalk.
Yes, within the normal six-year limit for billing disputes in England, Wales and Northern Ireland (five years in Scotland). Contact TalkTalk on 0345 172 0088 with your old account number and the dates of the bill. TalkTalk has access to the legacy billing records from Shell Energy and the original Post Office system. If TalkTalk refuses, the Ombudsman is the next step.
Post Office email addresses (@postoffice.co.uk) were transferred to Shell Energy webmail in 2021 and then migrated to TalkTalk Mail in 2024 to 2025. Active mailboxes generally still work but the underlying webmail platform has changed twice. If you cannot log in, TalkTalk customer service on 0345 172 0088 can recover access or issue a TalkTalk Mail address.
Yes. For broadband matters, write to TalkTalk, P.O. Box 346, Southampton, SO30 2PW. For independent escalation, Communications Ombudsman, P.O. Box 730, Warrington, WA4 6WU. The old Post Office Broadband correspondence address (in Southampton, formerly used by Shell Energy) is no longer monitored, anything sent there will be forwarded but slowly.
No. Post Office branches stopped handling broadband enquiries after the 2021 sale. Staff in branch will direct any broadband question to TalkTalk and can no longer access account records. Branches still handle banking, postal, identity and financial-services products.
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