01903 703421 Negative Who called me from this phone number?

Worthing • BT
This number is a landline operated by BT and located in Worthing, UK. The overall user rating for this number is Negative. The number 01903703421 has been searched 364 times, with 9 user comments helping to identify the caller's intent.
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At a glance

Community signals

  • Community rating: Negative
  • User reports: 9 user reports
  • Searches: 364
  • Last reported: 8 months ago
  • First reported: almost 4 years ago
  • Typical call time: before 1pm (92% of calls)

Number profile

  • UK format: 01903 703421
  • International: +441903703421
  • Number type: Landline
  • Carrier: BT
  • Area: Worthing
  • Area code: 01903

User Reports (9)

Your reports help others decide whether to answer calls from this number. Share your experience to help the community!

Scam/Fraud
15 Oct 2025

several letters received to our head office NOT the actual supply address all with deferent dates a week or so apart, different account numbers and all stating differing amounts owed. We are a small charity and have never been with these and checking the number its 2 digits different to the one on the smartest energy website. Its a scam, it has to be but beware. DO NOT send any money.

Unknown Caller
10 Oct 2025

I got a letter from them claiming I owed £4175 for a business account, which I never had ,letter was sent to my home address had my full name but wrong house number. Told me I could set up direct debit by going online or by calling this number 01903703421. Yeah no thanks clearly a scam.

Spam
17 Feb 2025

I received a letter addressed to my mother-in-law at my home address (?). She passed away 5+years ago.... They were requesting payment of an outstanding gas bill for £1,623!!! Prior to her passing, apart from the fact her last apartment had no gas, she had never, to our knowledge, ever had an account with this 'company'. I rang and advised them of the 'actual details', and they were vague, to say the least... Looking at the real Smartest Energy company website their tel. no. and registered address are - surprise-surprise, different to that stated in the letter I received. Beware, this would seem to be a clever scam and not genuine.

Spam
05 Jul 2024

Smartest web ... its a scam call

Scam/Fraud
10 Jun 2024

number received on utility letter

Scam/Fraud
16 May 2024

Similar to below. letter claiming to be from company but no account number or details. Got through to a number and african lady who could barely speak English. Threatens legal action but will ignore it

Scam/Fraud
25 Mar 2024

Had a letter through to our business address saying we owed money and to pay by bank transfer (details on letter) or call this number. They are not one of our suppliers. I called the number and was on hold for 30 minutes before hanging up. The letter threatens further action but I am ignoring it.

Scam/Fraud
21 Jun 2023

sent me a text saying a dd had failed. text header showed 'smartest'. pretty dumb as i dont do businss with them. number blocked and reported.

Scam/Fraud
02 Aug 2022

e-Mail with invoice attached asks to call this number. Company says it is Smartest Energy Business, which is similar to a real company, but the phone number is slightly different. Best scam I've seen so far. BEWARE.

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What type of call was it?

Reported locations

Reported from 21 UK cities

Bradford, Chelmsford, Newcastle upon Tyne, Mold, Bermondsey, Usk, Perth, Manchester, Witney, Loughborough, Chester, London, Birmingham, Keele, Hucknall, Carluke, Denton, Shaw, Basford, Martlesham (Martlesham Heath), Kennington

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How to Block This Number

On iPhone

  1. Open the Phone app and go to Recents
  2. Find the number 01903 703421 and tap the info icon (i)
  3. Scroll down and tap Block this Caller
  4. Confirm by tapping Block Contact

On Android

  1. Open the Phone app and tap the 3-dot menu
  2. Go to Call history or Recents
  3. Long press on 01903 703421
  4. Select Block number or Block/report spam

On Landline Phones

Several options are available for UK landlines:

  • BT Call Protect - free for BT customers
  • TalkTalk CallSafe - free for TalkTalk customers
  • Call blocking devices like CPR Call Blocker (available on Amazon)

Register with TPS (Telephone Preference Service)

The TPS is a free service for UK consumers that allows you to opt out of unsolicited sales and marketing calls.

Learn more about TPS registration

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Call Costs

Calling 01903703421 from a landline may cost up to 16p per minute. Many providers charge a 23p call set-up fee. Call packages often include these types of calls. You might not incur additional charges for calling this number, depending on your provider.

Dialling Instructions

Local UK callers can dial 01903703421 directly.

International callers should dial +44 1903 703421 or 0044 1903 703421. No leading zero is required when dialling abroad, e.g., +44(0)1903703421.

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