post https://api.ordnancesurvey.co.uk/places/v1/addresses/polygon?
Vertex limit
If a complex polygon comprising of more than 5000 vertices is used with the reference point attribute, the service may time out.
Vertex limit
If a complex polygon comprising of more than 5000 vertices is used with the reference point attribute, the service may time out.
Try It!
to start a request and see the response here!