Unfortunately your problem is becoming more common. New developments often have their own new cabinet installed. In areas which have already been planned or rolled out with fibre before the cabinet is installed it's a case of 'missing the boat' - Openreach are too busy rolling out new exchanges to come back and fill in gaps in existing exchange coverage. It may be years before this happens.
Alternatively as the cabinet is installed just for the development it may not have sufficient lines in it to merit the investment in a DSLAM. All fibre rollout by Openreach so far is commercially funded and there is no 'social imperative' to serve everyone* unless there is a business case. And that means a large number of lines in the cab. OK your development has 500 properties but do all the lines go through the same cab?
Of course there is the 'double whammy' in Virgin media areas that they very rarely extend their cable network (although they do have a 'cable my street' initiative if you can drum up interest from your neighbours). Problem there is often that the development streets are not adopted for a few years so they can't get permission to dig them up.
Finally have you considered a 4G / WiFi hotspot from EE? If you are in a strong signal area it may give you the speed you are looking for (albeit at a price).
It's a bit ironic that these new developments are often aimed at people on medium to high income who are those most wanting fast broadband connections for work etc. We have a development near me that failed to be ready in time for the fibre rollout earlier this year and it didn't get a DSLAM, despite the houses being packed with tech features and advertised as being CAT-5e flood wired throughout!
* You may be lucky however as London is one of several cities that is receiving government funding to make it 'super connected': http://www.culture.gov.uk/news/news_stories/8931.aspx so despite your doubts Lewisham may be able to get hold of funds to subsidise your cab. You need to start lobbying your councillors to get your area on the list - but it won't happen tomorrow.
Rubbish I live 1 mile away from DERBY in CHESTER GREEN ,
I WANT INFINITY FROM BT
I WOULD SIGN UP TODAY !!! BUT KEEPS CHANGING THE DATE FROM MAR 2012 to JUN 2012
to SEPT 2012 to DEC 2012 to now MAR 2013 WHY
O WHY ?
COME ON BT PLEASE SORT IT OUT !
MY POST CODE IS DE1 3RX
your posts do not go to BT as this is a customer forum.
I have suffered the changes of date just like you and the worst is even if your exchange is upgraded for infinity there is no certainty that your cabinet will be upgraded.
As all work is done at exchange by wholesale and then openreach laying cable and not your ISP BT Retail you just have to sit and wait like the rest of us myself included
I am relly anoyed with bt because i have being looking forward to getting bt infinty installed but everytime i check it gets put back every 3 months and i am not happy my postcode is WF11 8BQ and it is available in other of knottingley west yorkshire please tell me whats going on
Whilst it's not totally clear as the same happened to me, just constant delays. Here are mostly the reasons as to what causes delays http://www.superfast-openreach.co.uk/the-big-build/not-straightforward.aspx
My exchange (Shirley west midlands) says now accepting orders on open reach website.
However BT infinity checker for my telephone number says
Sorry, you're not currently able to get BT Infinity. This may be because your area has not been enabled yet, or your individual line does not support super-fast broadband. Register your interest and we'll let you know if this changes.
Does this mean our cabinet was left out?
How do I find out more?
Your exchange is ADSL enabled, and our initial test on your line indicates that your line should be able to have an ADSL broadband service that provides a fixed line speed up to 512Kbps. However, due to the length of your line, an engineer visit may be required, who will, where possible, supply the broadband service.
Our test also indicates that your line currently supports an estimated ADSL Max broadband line speed of 1Mbps; typically the line speed would range between 750Kbps and 2.5Mbps.
Our test also indicates that your line currently supports an estimated ADSL2+ broadband line speed of 1.5Mbps; typically the line speed would range between 1Mbps and 3.5Mbps. Our test also indicates that your line could support an estimated ADSL 2+ Annex-M broadband upstream line speed of 500Kbps and downstream line speed of 1.5Mbps; typically the downstream speed would range between 1Mbps and 3.5Mbps.
The actual stable line speed supportable will be determined during the first 10 days of use. This speed may change over time, to ensure line stability is maintained.
If you decide to place an order, a further test will be performed to confirm if your line is suitable for the service you wish to purchase.
Thank you for your interest.
Please note that postcode and address check results are indicative only. Most accurate results can be obtained from a telephone number check.
Note: If you already have a Broadband service enabled on this line and you want to switch service providers, you will need to contact both your current provider and your new provider to get your service changed over new and existing service provider to have this service transferred.