OK I got a reply and also a good giggle. First person forwarded the email to some project lead to reply to "this dude" (the dude being me). Here is the response....

I�m the project lead for the team that introduced the broadband feature on Rightmove. I�m sorry to hear that the data we have is inaccurate for your postcode.

I�ll get in contact our data provider for some feedback and get back in touch when I hear back.

Epic!

In reply to a post by MrSaffron:

if someone knows of a database with the lat/lng of all 27 million UK properties I'd like to know.

OS have this database. It used to be called AddressBase but that was years ago so they have probably renamed it. But, it isn't cheap. Details on OS website

There is also the LLPG and NLPG that are used by government (which are feeds for AddressBase).

I missed out the word free

Maybe charge you all a pound a time for access to our maps will pay for it.

Better hope a lot of people access it then

Unfortunately this level of data is based on stuff that costs people money to create. I don't think there is an equivalent to OpenStreetMap for address data - perhaps a kickstarter project?

In reply to a post by ian72:

Better hope a lot of people access it then

Unfortunately this level of data is based on stuff that costs people money to create. I don't think there is an equivalent to OpenStreetMap for address data - perhaps a kickstarter project?

I think it is expected that the map here wont be totaly accurate, for example in my case where it showed fibre speeds yet also showed 3 x test results of 2 -3Mb.

However something like Rightmove should be at least linked into the Openreach checker, which shows my postcode area as 90+ % probability of EO and speeds between 1.5 - 2Mb. At least your map goes into further detail and in a way rectifies any glitches.

By the rule of thumb used by places like rightmove people in the Cirencester area will be obtaining speeds of > 10GB (due to the fact GCHQ is on their doorstep)

Yes, be verey wary of Postcodes.

One extreme example I am aware of is in a street of identical blocks of flats.

There is a change of Postcode in the middle of the run of blocks.

Generally, all of the flats within any one block have the same post code, and consist of two ground floor flats with an entry between them, to the upper three storeys, with three flats per storey. Taht is 11 flats per block.

But in the one block to the left/west of the Postcode change, the ground-floor falt to the right, has the same postcode as the blocks to the right.

All are domestic etc, so no obvious reason for the difference, apart from error away back when the postcodes were issued.

Rightmove should be at least linked into the Openreach checker, which shows my postcode area as 90+ % probability of EO and speeds between 1.5 - 2Mb.

My postcode and the adjacent one are 100% EO (68 and 6 properties respectively) yet Rightmove say:
"Superfast enabled for speeds up to 76Mbps

There is superfast available in this area and it is very likely to be provided to this property but you'll need to check with the providers below to be sure."

It would appear that at best Rightmove isn't using the full post code but perhaps exchange level only.

Have done a check on a local cabinet I know is not live and yes shows the FTTC speed.

Am sure I could do them a deal for better information, with options for feedback to take on board the errors that will always be there in a large data set.

Am sure I could do them a deal for better information

Go for it! If they bite then you'll have some useful extra income. Perhaps FTPoD even! <g>

Having dug a bit deeper my postcode consists of 34 properties, only one of which is connected to a Fibre cabinet, the remaining are exchange only.

According to the Openreach checker (which they took offline now!) there is a 93% probability that my postcode is exchange only.

So lets do the maths.............

as there is 1 property out of 34 which is connected to a cabinet that means:

1 / 34 * 100 = 3 so 3% are connected to the cabinet
which then leaves 97% which are EO lines.

yet openreach report 93%

not a huge difference but if that was the level of innacuracy then they are not giving correct figures in relation to the real % of EO lines out there. Add them all up and it would be a massively higher number.

So when they reach their target % coverage by all means you could easily say at least a few% is completly falsified.

That is maths at primary school level, which again shows the cloack and dagger tactics used.

Talk about polishing a turd!