The date is when this particular entry was made as part of a chronological list of events relating to the treatment.
And approval over their is via the EU EMA, not NHS (though NHS would later sign off on insurance coverage once they get the EMA MMA).
This does not mean that important details about the treatment including approval would not be made to the NHS for many reasons. Also, another point on the AA or Fast track issue, below is another entry reiterating the NHS info definitely is {throughout the entire process} is gearing up to expect AA {they use your terminology in this example}
'Northwest Biotherapeutics will be able to petition the FDA for accelerated approval if the PII glioblastoma multiforme trial generates results consistent to those obtained from previous trials'