Returns the registered proprietor names recorded against a supplied title number — the authoritative answer to "who owns this". Single GET operation on /titles/{title_number}/registered-proprietor-names described by an OpenAPI 3.0.0 document declaring both the production and bgtest hosts and securing the operation with HTTP Basic over mutual TLS.
{
"openapi": "3.0.0",
"info": {
"title": "Registered Proprietor Names Service",
"description": "A specification for the HMLR Business Gateway registered proprietor names service.",
"version": "1.0.0"
},
"servers": [
{
"url": "https://businessgateway.landregistry.gov.uk/bg2/api/v1/",
"description": "Production server"
},
{
"url": "https://bgtest.landregistry.gov.uk/bg2test/api/v1/",
"description": "Test server"
}
],
"security": [
{
"basicAuth": []
}
],
"tags": [
{
"name": "Registered Proprietor Names",
"description": "Proprietor information related to a title."
}
],
"paths": {
"/titles/{title_number}/registered-proprietor-names": {
"get": {
"operationId": "getRegisteredProprietorNames",
"tags": ["Registered Proprietor Names"],
"summary": "Get proprietor names associated with a title number.",
"description": "Returns the registered proprietor names for the provided title number.",
"parameters": [
{
"$ref": "#/components/parameters/TitleNumberParameter"
}
],
"responses": {
"200": {
"description": "Success",
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/RegisteredProprietorsResponse"
},
"examples": {
"Example: Title is valid, private individual proprietor": {
"value": {
"data": {
"title_status": "Title number is valid.",
"title_status_code": "VALID",
"title_number": "HP708026",
"proprietors": [
{
"sequence": 1,
"proprietor_name": "Mr Richard Hurst OBE",
"title": "Mr",
"forenames": "Richard",
"surname": "Hurst",
"decoration": "OBE",
"proprietor_type": "PRIVATE_INDIVIDUAL"
}
]
}
}
},
"Example: Title is valid, two private individual proprietors": {
"value": {
"data": {
"title_status": "Title number is valid.",
"title_status_code": "VALID",
"title_number": "HP708026",
"proprietors": [
{
"sequence": 1,
"proprietor_name": "Mr Richard Hurst OBE",
"title": "Mr",
"forenames": "Richard",
"surname": "Hurst",
"decoration": "OBE",
"proprietor_type": "PRIVATE_INDIVIDUAL"
},
{
"sequence": 2,
"proprietor_name": "Mrs Elizabeth Anne Hurst OBE",
"title": "Mrs",
"forenames": "Elizabeth Anne",
"surname": "Hurst",
"decoration": "OBE",
"proprietor_type": "PRIVATE_INDIVIDUAL"
}
]
}
}
},
"Example: Title is valid, organisation proprietor": {
"value": {
"data": {
"title_status": "Title number is valid.",
"title_status_code": "VALID",
"title_number": "HP708026",
"proprietors": [
{
"sequence": 1,
"proprietor_name": "csd plc",
"organisation_type": "CORPORATE_BODY",
"company_location": "ENGLAND_OR_WALES",
"proprietor_type": "ORGANISATION"
}
]
}
}
},
"Example: Title is valid, one private individual and one organisation proprietor": {
"value": {
"data": {
"title_status": "Title number is valid.",
"title_status_code": "VALID",
"title_number": "HP708026",
"proprietors": [
{
"sequence": 1,
"proprietor_name": "Mr Richard Hurst OBE",
"title": "Mr",
"forenames": "Richard",
"surname": "Hurst",
"decoration": "OBE",
"proprietor_type": "PRIVATE_INDIVIDUAL"
},
{
"sequence": 2,
"proprietor_name": "csd plc",
"organisation_type": "CORPORATE_BODY",
"company_location": "ENGLAND_OR_WALES",
"proprietor_type": "ORGANISATION"
}
]
}
}
},
"Example: Title is valid, closed and continued under another title number": {
"value": {
"data": {
"title_status": "According to our records, this title number has been closed and continued under another title number.",
"title_status_code": "CLOSED_AND_CONTINUED",
"title_number": "HP708026",
"continued_under_title_number": "HP708027",
"proprietors": []
}
}
},
"Example: Title is valid, title status closed/cancelled/not used": {
"value": {
"data": {
"title_status": "According to our records, this title number has been closed or cancelled.",
"title_status_code": "CLOSED_OR_CANCELLED",
"title_number": "HP708026",
"proprietors": []
}
}
},
"Example: Title is valid, register not yet created": {
"value": {
"data": {
"title_status": "This is pending a new title.",
"title_status_code": "PENDING_NEW_TITLE",
"title_number": "HP708026",
"proprietors": []
}
}
}
}
}
}
},
"400": {
"description": "Invalid request",
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/ErrorResponse"
},
"examples": {
"Example: Title is invalid": {
"value": {
"errors": [
{
"timestamp": "2021-11-13T20:20:39.123Z",
"http_status": "400",
"error_code": "BG40001",
"error_message": "Malformed invalid schema. Title is invalid."
}
]
}
}
}
}
}
},
"404": {
"description": "Title not found",
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/ErrorResponse"
},
"examples": {
"Example: Title is invalid": {
"value": {
"errors": [
{
"timestamp": "2021-11-13T20:20:39.123Z",
"http_status": "404",
"error_code": "BG40002",
"error_message": "Title is not found."
}
]
}
}
}
}
}
},
"default": {
"$ref": "#/components/responses/DefaultErrorResponse"
}
}
}
}
},
"components": {
"securitySchemes": {
"basicAuth": {
"type": "http",
"scheme": "basic"
}
},
"parameters": {
"TitleNumberParameter": {
"in": "path",
"name": "title_number",
"description": "The title number of the property. Characters must be uppercase.",
"schema": {
"$ref": "#/components/schemas/TitleNumber"
},
"required": true
}
},
"responses": {
"DefaultErrorResponse": {
"description": "An error has occurred.",
"content": {
"application/json": {
"schema": {
"$ref": "#/components/schemas/ErrorResponse"
},
"examples": {
"Gateway Timeout": {
"value": {
"errors": [
{
"timestamp": "2021-11-13T20:20:39.123Z",
"http_status": "504",
"error_code": "BG50004",
"error_message": "Gateway timeout"
}
]
}
}
}
}
}
}
},
"schemas": {
"TitleNumber": {
"description": "The title number of the property.",
"type": "string",
"maxLength": 9,
"pattern": "^([a-zA-Z]{0,3}[1-9][0-9]{0,5}|[a-zA-Z]{1,3}[1-9][0-9]{0,3}[zZ])$"
},
"Proprietor": {
"type": "object",
"description": "A registered proprietor for the provided title number.",
"properties": {
"sequence": {
"type": "integer",
"minimum": 1,
"description": "The position of the proprietor within the list.",
"format": "int32",
"example": 1
}
},
"discriminator": {
"propertyName": "proprietor_type",
"mapping": {
"PRIVATE_INDIVIDUAL": "#/components/schemas/PrivateIndividual",
"ORGANISATION": "#/components/schemas/Organisation"
}
}
},
"PrivateIndividual": {
"description": "Proprietor details for a private individual.",
"properties": {
"proprietor_name": {
"type": "string",
"description": "Full name of the individual",
"example": "Mrs Sarah Louise Smith OBE"
},
"title": {
"type": "string",
"example": "Mrs"
},
"forenames": {
"type": "string",
"example": "Sarah Louise"
},
"surname": {
"type": "string",
"example": "Smith"
},
"decoration": {
"type": "string",
"description": "Text which contains the details of any decoration and/or title held by a private individual. e.g. 'OBE','GC', 'KCMG'. For those private individuals holding titles such as 'Duke of ...', 'Lord' etc., the particulars of such titles will be held in this field.",
"example": "OBE"
},
"proprietor_type": {
"type": "string",
"description": "Classification of a proprietor to distinguish between a private individual and an organisation.",
"enum": ["PRIVATE_INDIVIDUAL"]
}
},
"allOf": [
{
"$ref": "#/components/schemas/Proprietor"
}
],
"x-discriminator-value": "PRIVATE_INDIVIDUAL"
},
"Organisation": {
"type": "object",
"description": "Proprietor details for an organisation.",
"properties": {
"proprietor_name": {
"type": "string",
"description": "Name of a company, corporate body, local authority or, other organisation or establishment other than that of a private individual.",
"example": "ACME INC."
},
"organisation_type": {
"type": "string",
"description": "Fine-grained classification of an organisation.",
"example": "CORPORATE_BODY",
"enum": [
"PRIVATE_INDIVIDUAL",
"LIMITED_COMPANY_OR_PUBLIC_LIMITED_COMPANY",
"COUNTY_COUNCIL",
"LOCAL_AUTHORITY",
"CORPORATE_BODY",
"INDUSTRIAL_AND_PROVIDENT_SOCIETY_(COMPANY)",
"INDUSTRIAL_AND_PROVIDENT_SOCIETY_(CORPORATE_BODY)",
"UNKNOWN_(USED_FOR_CUSTOMER_NAMES_ONLY)",
"UNLIMITED_COMPANY",
"LIMITED_LIABILITY_PARTNERSHIP",
"HOUSING_ASSOCIATION/SOCIETY_(COMPANY)",
"HOUSING_ASSOCIATION/SOCIETY_(CORPORATE_BODY)",
"OFFICIAL_CUSTODIAN_FOR_CHARITIES",
"OFFICIAL_CUSTODIAN_FOR_CHARITIES_(ON_BEHALF_OF_TRUSTEES)",
"CO-OPERATIVE_SOCIETY_(COMPANY)",
"CO-OPERATIVE_SOCIETY_(CORPORATE_BODY)",
"COMMUNITY_BENEFIT_SOCIETY_(COMPANY)",
"COMMUNITY_BENEFIT_SOCIETY_(CORPORATE_BODY)",
"REGISTERED_SOCIETY_(COMPANY)",
"REGISTERED_SOCIETY_(CORPORATE_BODY)",
"HOUSING_ASSOCIATION_CO-OPERATIVE_SOCIETY_(COMPANY)",
"HOUSING_ASSOCIATION_CO-OPERATIVE_SOCIETY_(CORPORATE_BODY)",
"HOUSING_ASSOCIATION_COMMUNITY_BENEFIT_SOCIETY_(COMPANY)",
"HOUSING_ASSOCIATION_COMMUNITY_BENEFIT_SOCIETY_(CORPORATE_BODY)",
"HOUSING_ASSOCIATION_REGISTERED_SOCIETY_(COMPANY)",
"HOUSING_ASSOCIATION_REGISTERED_SOCIETY_(CORPORATE_BODY)",
"UNKNOWN_(PROPRIETOR_HAS_NO_IOPN_DELIMITERS)"
]
},
"company_location": {
"type": "string",
"description": "The geographical location of the organisation. A value of 'overseas' includes the Isle of Man and the Channel Islands.",
"example": "ENGLAND_OR_WALES",
"enum": ["ENGLAND_OR_WALES", "SCOTLAND", "NORTHERN_IRELAND", "OVERSEAS"]
},
"proprietor_type": {
"type": "string",
"description": "Classification of a proprietor to distinguish between a private individual and an organisation.",
"enum": ["ORGANISATION"]
}
},
"allOf": [
{
"$ref": "#/components/schemas/Proprietor"
}
],
"x-discriminator-value": "ORGANISATION"
},
"Error": {
"type": "object",
"description": "An error response for an unsuccessful request.",
"required": [
"error_code",
"error_message"
],
"properties": {
"error_code": {
"description": "The code related to this error, see documentation for more information.",
"type": "string"
},
"error_message": {
"description": "The descriptive reason behind an error.",
"type": "string"
},
"http_status": {
"description": "The http status code related to this error.",
"type": "string",
"example": "503"
},
"timestamp": {
"description": "The UTC timestamp of when the error occurred.",
"type": "string",
"format": "date-time",
"example": "2021-04-04T15:29:51.405Z"
},
"trace_id": {
"type": "string",
"description": "A trace identifier for this request.",
"example": "c62e9b3f-e523-4f04-a941-c6cf0d60c080"
}
}
},
"ErrorResponse": {
"description": "A response for an unsuccessful result.",
"type": "object",
"properties": {
"errors": {
"description": "A collection of one or more errors as to why the API request failed.",
"type": "array",
"items": {
"$ref": "#/components/schemas/Error"
}
}
}
},
"RegisteredProprietorsResponse": {
"type": "object",
"properties": {
"data": {
"type": "object",
"description": "A successful response.",
"required": [
"title_status",
"title_status_code",
"title_number",
"proprietors"
],
"properties": {
"title_status": {
"type": "string",
"description": "The status of the title."
},
"title_status_code": {
"type": "string",
"enum": [
"VALID",
"CLOSED_OR_CANCELLED",
"CLOSED_AND_CONTINUED",
"PENDING_NEW_TITLE"
],
"description": "A code representing the current status of the title."
},
"title_number": {
"$ref": "#/components/schemas/TitleNumber"
},
"continued_under_title_number": {
"type": "string",
"description": "The title requested has been closed and continued under this title number.",
"example": "FL99999"
},
"proprietors": {
"type": "array",
"description": "The list of registered proprietors for the provided title number",
"items": {
"discriminator": {
"propertyName": "proprietor_type",
"mapping": {
"PRIVATE_INDIVIDUAL": "#/components/schemas/PrivateIndividual",
"ORGANISATION": "#/components/schemas/Organisation"
}
},
"oneOf": [
{
"$ref": "#/components/schemas/PrivateIndividual"
},
{
"$ref": "#/components/schemas/Organisation"
}
],
"x-force-type": "Proprietor"
},
"x-force-type": "List<Proprietor>"
}
}
}
}
}
}
}
}