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"Major physical features" used in postcode polygon calculations

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Dear Ordnance Survey Limited,

The "Code-Point with Polygons" overview document [1] details how the postcode polygons have been automatically computed using a Thiessen process.

It says that "The boundary encloses every delivery address for which positional data of sufficient quality is available, and which follow major physical features that could reasonably be regarded as part of the postcode boundary".

Could you please enumerate the types of "major physical features" used in this calculation, and if the type has different size classes (such as roads or waterways) which classes are used and ignored.

Yours faithfully,
Jonty Wareing

[1]: https://www.ordnancesurvey.co.uk/documen...

FOI, Ordnance Survey Limited

1 Attachment

Dear Jonty Wareing,

                                                                                                   

Thank you for your email of 26/03/2024.

As your request was received by Ordnance Survey on 26/03/2024, we will
provide you with a response within 20 working days, as required by the
Freedom of Information Act 2000, therefore by 25/04/2024.

In exceptional circumstances it may be necessary for Ordnance Survey to
extend this date to consider a complex public interest argument if
engaging a qualified exemption.  In such cases we will notify you of the
revised date by which we would expect to provide a response.

Should you need to contact Ordnance Survey regarding your request at any
time, please quote the allocated reference number in your correspondence.

Thank you for your enquiry.

 

Kind regards,

 

 

Elizabeth Cole

FOI Officer and Paralegal, Legal Services

 

Adanac Drive, Southampton, United Kingdom, SO16 0AS

[1]www.os.uk | [2][Ordnance Survey Limited request email]

Follow us: [3]Twitter | [4]LinkedIn | [5]YouTube | [6]Instagram |
[7]Facebook

Our values are: Think Customer | Thrive Together | Stay Ahead | Seize the
Moment

 

 

This email and any attachments are intended only for the intended
recipient and may contain sensitive information. If you are not the
intended recipient, please immediately delete this email and inform the
sender.

OS email communications may be monitored to ensure the secure and
effective operation of our systems and for other lawful purposes. Subject
to contract: No rights are to be derived from any proposal contained in
this email until a written agreement containing all necessary terms is
executed between the relevant parties.

Thank you for your cooperation.

Ordnance Survey Limited (Company Registration number 09121572)
Registered Office: Explorer House
Adanac Drive
Southampton SO16 0AS
Tel: 03456 050505
[8]http://www.os.uk

References

Visible links
1. http://www.os.uk/
2. mailto:[Ordnance Survey Limited request email]
3. https://twitter.com/OrdnanceSurvey
4. https://www.linkedin.com/company/ordnanc...
5. https://www.youtube.com/user/OSMapping?b...
6. https://www.instagram.com/ordnancesurvey...
7. https://www.facebook.com/osmapping/
8. http://www.os.uk/

FOI, Ordnance Survey Limited

1 Attachment

Dear Jonty Wareing

 

Request 

 

We received your request on 26 March 2024. 

 

We have handled your request under the Freedom of Information Act (FOIA)
2000. 

 

A copy of your request is set out in the extract below: 

 

“The "Code-Point with Polygons" overview document [1] details how the
postcode polygons have been automatically computed using a Thiessen
process.

 

It says that "The boundary encloses every delivery address for which
positional data of sufficient quality is available, and which follow major
physical features that could reasonably be regarded as part of the
postcode boundary".

 

Could you please enumerate the types of "major physical features" used in
this calculation, and if the type has different size classes (such as
roads or waterways) which classes are used and ignored.”

  

Our response 

 

I confirm that Ordnance Survey does hold the information you have
requested.  

 

I confirm that the product must, “wherever it is possible without moving
the boundary to the wrong side of an address, maintain the alignment of
the unit postcode boundaries to motorways, railways, rivers and canals, A
roads and B roads and other topological features, in that order of
priority”. 

 

Internal Review 

Your enquiry has been processed according to the Freedom of Information
Act (FOIA) 2000 .  If you are unhappy with our response, you may request
an internal review with our Internal Review Officer by contacting them,
within 40 working days of receipt of our final response to your FOI
request, as follows: 

 

Internal Review Officer  
Customer Service Centre 
Ordnance Survey 
Adanac Drive 
Southampton 
SO16 0AS 

 

E-mail: [1][Ordnance Survey Limited request email] 

 

Please include the reference number above. You may request an internal
review where you believe Ordnance Survey has: 

·        Failed to respond to your request within the time limits
(normally 20 working days)  

·        Failed to tell you whether or not we hold the information  

·        Failed to provide the information you have requested  

·        Failed to explain the reasons for refusing a request  

·        Failed to correctly apply an exemption or exception  

  

The Internal Review Officer will not have been involved in the original
decision. They will conduct an independent internal review and will inform
you of the outcome of the review normally within 20 working days, but
exceptionally within 40 working days, in line with the Information
Commissioner’s guidance.  

 

The Internal Review Officer will either: uphold the original decision,
provide an additional explanation of the exemption/s applied or release
further information, if it is considered appropriate to do so. 

 

Appeal to Information Commissioner's Office (ICO) 

If you are still dissatisfied after our internal review, you can complain
to the [2]Information Commissioner’s Office (ICO). You should make
complaints to the ICO within six weeks of receiving the outcome of an
internal review. The easiest way to lodge a complaint is through their
website:
[3]https://ico.org.uk/make-a-complaint/foi-...

 

Your sincerely 

 

FOI Team

Legal Services

 

  
 

Adanac Drive, Southampton, United Kingdom, SO16 0AS 

[4]www.os.uk | [5][email address]

Follow us: [6]Twitter | [7]LinkedIn | [8]YouTube | [9]Instagram |
[10]Facebook  

Our values are: Think Customer | Thrive Together | Stay Ahead | Seize the
Moment

 

This email and any attachments are intended only for the intended
recipient and may contain sensitive information. If you are not the
intended recipient, please immediately delete this email and inform the
sender.

OS email communications may be monitored to ensure the secure and
effective operation of our systems and for other lawful purposes. Subject
to contract: No rights are to be derived from any proposal contained in
this email until a written agreement containing all necessary terms is
executed between the relevant parties.

Thank you for your cooperation.

Ordnance Survey Limited (Company Registration number 09121572)
Registered Office: Explorer House
Adanac Drive
Southampton SO16 0AS
Tel: 03456 050505
[11]http://www.os.uk

References

Visible links
1. mailto:[Ordnance Survey Limited request email]
2. https://ico.org.uk/
3. https://ico.org.uk/make-a-complaint/foi-...
4. http://www.os.uk/
5. mailto:[email address]
6. https://twitter.com/OrdnanceSurvey
7. https://www.linkedin.com/company/ordnanc...
8. https://www.youtube.com/user/OSMapping?b...
9. https://www.instagram.com/ordnancesurvey...
10. https://www.facebook.com/osmapping/
11. http://www.os.uk/

Dear FOI Team,

Thank you so much for your very helpful response.

Could you please elaborate on what "other topological features" are used? If it would be easier, a list of types of features used from OS data would be acceptable.

Yours sincerely,
Jonty Wareing

FOI, Ordnance Survey Limited

Dear Jonty Wareing,

This email is to acknowledge receipt of your email of 25 April 2024, following on from our response to your FOI request.

Kind regards,

Elizabeth Cole
FOI Officer and Paralegal, Legal Services (Working days: Tue, Wed, Thurs)

Adanac Drive, Southampton, United Kingdom, SO16 0AS
T: +44 (0)2380 055334
http://www.os.uk/ | [email address]
Follow us: Twitter | LinkedIn | YouTube | Instagram | Facebook
Our values are: Think Customer | Thrive Together | Stay Ahead | Seize the Moment

show quoted sections

FOI, Ordnance Survey Limited

1 Attachment

Dear Jonty Wareing

 

Request

 

We received your request on 25 April 2024, following on from our response
of 25 April 2024 to your FOI request under reference FOI-24-1233.

 

We have handled your request under the Freedom of Information Act (FOIA)
2000.

 

A copy of your request is set out in the extract below:

 

“Could you please elaborate on what "other topological features" are used?
If it would be easier, a list of types of features used from OS data would
be acceptable.”

 

Our response

 

I confirm that Ordnance Survey does not hold the requested information.

 

Internal Review

Your enquiry has been processed according to the Freedom of Information
Act (FOIA) 2000.  If you are unhappy with our response, you may request
an internal review with our Internal Review Officer by contacting them,
within 40 working days of receipt of our final response to your FOI
request, as follows:

Internal Review Officer
Customer Service Centre
Ordnance Survey
Adanac Drive
Southampton
SO16 0AS

E-mail: [1][Ordnance Survey Limited request email]

Please include the reference number above. You may request an internal
review where you believe Ordnance Survey has:

• Failed to respond to your request within the time limits (normally 20
working days)
• Failed to tell you whether or not we hold the information
• Failed to provide the information you have requested
• Failed to explain the reasons for refusing a request
• Failed to correctly apply an exemption or exception

 

The Internal Review Officer will not have been involved in the
original decision. They will conduct an independent internal review and
will inform you of the outcome of the review normally within 20 working
days, but exceptionally within 40 working days, in line with the
Information Commissioner’s guidance. 

The Internal Review Officer will either: uphold the original decision,
provide an additional explanation of the exemption/s applied or release
further information, if it is considered appropriate to do so.

Appeal to Information Commissioner's Office (ICO)

If you are still dissatisfied after our internal review, you can complain
to the [2]Information Commissioner’s Office (ICO). You should make
complaints to the ICO within six weeks of receiving the outcome of an
internal review. The easiest way to lodge a complaint is through their
website:
[3]https://ico.org.uk/make-a-complaint/foi-....

Thank you for your enquiry.

Kind regards,

 

 

Elizabeth Cole

FOI Officer and Paralegal, Legal Services

 

Adanac Drive, Southampton, United Kingdom, SO16 0AS

[4]www.os.uk | [5][Ordnance Survey Limited request email]

Follow us: [6]Twitter | [7]LinkedIn | [8]YouTube | [9]Instagram |
[10]Facebook

Our values are: Think Customer | Thrive Together | Stay Ahead | Seize the
Moment

 

 

This email and any attachments are intended only for the intended
recipient and may contain sensitive information. If you are not the
intended recipient, please immediately delete this email and inform the
sender.

OS email communications may be monitored to ensure the secure and
effective operation of our systems and for other lawful purposes. Subject
to contract: No rights are to be derived from any proposal contained in
this email until a written agreement containing all necessary terms is
executed between the relevant parties.

Thank you for your cooperation.

Ordnance Survey Limited (Company Registration number 09121572)
Registered Office: Explorer House
Adanac Drive
Southampton SO16 0AS
Tel: 03456 050505
[11]http://www.os.uk

References

Visible links
1. mailto:[Ordnance Survey Limited request email]
2. https://ico.org.uk/
3. https://ico.org.uk/make-a-complaint/foi-...
4. http://www.os.uk/
5. mailto:[Ordnance Survey Limited request email]
6. https://twitter.com/OrdnanceSurvey
7. https://www.linkedin.com/company/ordnanc...
8. https://www.youtube.com/user/OSMapping?b...
9. https://www.instagram.com/ordnancesurvey...
10. https://www.facebook.com/osmapping/
11. http://www.os.uk/

We don't know whether the most recent response to this request contains information or not – if you are Jonty Wareing please sign in and let everyone know.