Number range
020 7405 xxxx
Ofcom’s records for the block of 10,000 numbers that start 0207405, and any numbers in it that we hold other information about.
What Ofcom’s records say
- Allocated to
- BT
- The provider Ofcom gave the block to
- Ofcom status
- Allocated
- Allocated on
- 26 May 1999
- Numbers in block
- 10,000 numbers
- Number length
- 11 digits
Source: Ofcom numbering data, files published 7 October 2026, checked 13 October 2026
Ofcom has allocated this block of numbers to BT.
Ofcom allocates phone numbers to communications providers in blocks. The provider shown is the one Ofcom allocated this block to. It is not the person or business that called you, and the number may since have moved to a different network, because people can usually keep their number when they switch provider. Ofcom does not hold information about individual numbers.
Numbers in this range we know about
Numbers an organisation lists on its own website or in an official register, and numbers at least 3 visitors have reported.
- 020 7405 1039
- Pharmacy: Boutalls Pharmacy
- 020 7405 2739
- GP practice: Museum Practice
- 020 7405 2825
- Pharmacy: Holborn Pharmacy
- 020 7405 5640
- School: St George the Martyr Church of England Primary School
- 020 7405 5665
- Pharmacy: Gray's Inn Pharmacy
- 020 7405 7686
- University or higher education institution: London School of Economics and Political Science
- 020 7405 8870
- Pharmacy: Kerrs Chemist
- 020 7405 9200
- NHS trust: Great Ormond Street Hospital for Children NHS Foundation Trust
- 020 7405 9360
- GP practice: Gray's Inn Medical Group Chancery Lane
Contains public sector information from NHS England (Organisation Data Service), "Pharmacies (edispensary)" (13 October 2026), licensed under the Open Government Licence v3.0.
Contains public sector information from NHS England (Organisation Data Service), "GP Practices (epraccur)" (13 October 2026), licensed under the Open Government Licence v3.0.
Contains public sector information from Department for Education, "Establishment fields CSV" (13 October 2026), licensed under the Open Government Licence v3.0.
Contains public sector information from NHS England (Organisation Data Service), "NHS Trusts (etr)" (13 October 2026), licensed under the Open Government Licence v3.0.
Sources and checks
This page relies on:
Checked on 13 October 2026. Read how reports work. How we check our information. Spotted a mistake? Tell us and we will put it right.