I've had to look this up too as we're in Botswana so DS will end up with more vaccines than he'd get in the UK. He did get a BCG at birth, but there's other things which aren't immunised against here which are standard on the uk.
Discontinued as in 'no longer offered for free'? That's got nothing to do with efficacy.
Regards efficacy, some quick Googling uncovers http://www.ncbi.nlm.nih.gov/pubmed/8309034, which states that "On average, BCG vaccine significantly reduces the risk of TB by 50%. Protection is observed across many populations, study designs, and forms of TB."
My understanding is that it was no longer required as TB had been mostly eradicated in the UK (why vaccinate against something that isn't a risk?). However, TB is now on the rise (see http://www.hpa.org.uk/Topics/InfectiousDiseases/InfectionsAZ/Tuberculosis/ and http://www.nhs.uk/news/2008/05May/Pages/DrugresistantTBonriseinUK.aspx), which is why one might want to consider vaccinating against it.
So, what reputable sources support your claim that it's not efficacious? Links please!
Again, you've not provided anything to back up what you're saying.
If we're in to anecdotes, my wife was able to book her Mantoux and BCG with less than a day's notice with NHS Occupational Health (albeit a couple of years ago). No problem with supply whatsoever.
There are various employers (e.g. the NHS, some schools) that require their staff to be vaccinated against TB.
Croydon's TB vaccination policy states that they currently offer the BCG to people in certain risk groups. It doesn't sound as though it's "no longer routinely available, recommended or stored in the country".
And yes, you may (depending on circumstances) have to pay for the BCG. (My wife paid £45 for the Mantoux and BCG).
g33k - I think the TB vaccine is quite widely known to be quite ineffective - particularly in adults iirc. There is a lot of research going on at the moment to try to find an alternative because there is so much concern about it - not so much in the UK but it still kills about 2 million people worldwide and the vaccine just isn't preventing it. There was a recent news article about a new breakthrough towards the development of a new TB vaccine and even it mentioned that the current BCG vaccine offers limited protection. Here is a link to one article for you.
I had the vaccination at 4 days old since we lived in an area where there were a lot of recent immigrants so it is fine for a young baby if you live in an area that is at risk then it is worth considering currently looking through both links as to the pros and cons can't give you anymore advice than that sorry
An efficacy of 50% does make the BCG vaccine the least efficient childhood vaccine, or? The BCG doesn't protect against infection very well, but it does protect (to about 80%) from extra-pulmonary complications (for example tuberculosis meningitis). Each parent should look at the real risk in their community. Up here in Edinburgh, I would have not gotten the kids the BCG.