- SRA number
- 383444
- Authorisation
- Recognised body
- Authorised since
- 1 November 2011
- Organisation type
- Recognised body, authorised
- Constitution
- Partnership
- Practising offices
- 5 (4 branches)
- Head office
- London EC3N 1LJ
- Branch towns
- London, Manchester, Birmingham, Oxford
- Areas of law reported to the SRA
- 5: Immigration, Children, Criminal, Litigation, Family
- Website (SRA record)
- itnsolicitors.com
- Head office phone
- 020 3909 8100
- SRA firms in City of London
- 754 (178 residential property)
Irvine Thanvi Natas is a recognised body authorised by the Solicitors Regulation Authority since November 2011 and recorded under SRA number 383444. The SRA record lists 5 practising offices: the head office at Portsoken House, London, EC3N 1LJ, plus 4 further offices in London, Manchester, Birmingham and Oxford. Its constitution is recorded as partnership.
In its most recent annual return the firm told the SRA it delivered work in 5 areas of law: Immigration, Children, Criminal, Litigation and Family. Residential property is not among the reported areas, so the firm does not appear in the conveyancing lists on this site's town and city pages.
The head office postcode EC3N 1LJ falls within City of London (London), where the SRA register lists 754 authorised firms with a practising office, 178 of them reporting residential property work. The nearest other SRA-regulated firms by straight-line distance from the head office are Hughes and Dorman (same postcode, London), Waterstone Chambers LLP (same postcode, London), Sonn Macmillan Walker Limited (same postcode, London), Aina Khan Law Limited (100 m, London) and Privity Legal Ltd (100 m, London). 1 of those 5 reports residential property work.
The SRA records the firm's constitution as partnership, a structure with no Companies House registration, so there is no company record to cross-reference; the SRA authorisation record is the only public register entry for the firm.
Offices on the SRA record
| Office | Address | District | Phone |
|---|---|---|---|
| Head office | Portsoken House, 155-157 Minories, London, EC3N 1LJ | City of London | 020 3909 8100 |
| Branch | City View House, 1 Dorset Place, Stratford, London, E15 1BZ | Newham | |
| Branch | 125 Deansgate, Manchester, M3 2BY | Manchester | 0161 669 6803 |
| Branch | Lewis Building, Bull Street, Birmingham, B4 6AF | Birmingham | 0121 272 1698 |
| Branch | Prama House, 267 Banbury Road, Summertown, Oxford, 0X2 7HT (England) | outside England and Wales | 07865 594460 |
Areas of law reported to the SRA
Self-reported by the firm in its most recent annual return to the SRA ("the areas of law that the law firm has told us they delivered"). A lagging description of past work, not a live service list, a specialism claim or a quality mark; it may be up to a year old and is blank for newly authorised firms.
Nearest SRA-regulated firms
- Hughes and Dorman · Londonsame postcode
- Waterstone Chambers LLP · London · residential propertysame postcode
- Sonn Macmillan Walker Limited · Londonsame postcode
- Aina Khan Law Limited · London100 m
- Privity Legal Ltd · London100 m
solicitorcost.com includes data supplied by the Solicitors Regulation Authority.
Source: SRA Firm data web service (terms 1 July 2020, attribution required); firm status, offices and areas of law as reported by the SRA on 28 August 2026. Areas of law are self-reported by each firm in its annual return and describe work it told the SRA it delivered, not a live service menu or a quality mark. Companies House fields from the Basic Company Data bulk file dated 1 May 2026. Geocoding by postcodes.io: contains OS data (c) Crown copyright and database right 2026, Royal Mail data (c) Royal Mail copyright and database right 2026, National Statistics data (c) Crown copyright and database right 2026. No firm on this site is sponsored, ranked or endorsed, and nothing here implies SRA endorsement of this site.