Sawston facility certification application submission to MHRA in between April 28 and May 18.
I'd expect this to happen closer to August/September timeframe.
When NWBio gives a timeframe estimate (i.e. 6-8 weeks), it really means 'this will not happen for at least 8 weeks'. It's not a window saying 'this will happen in 6 weeks at the earliest or 8 weeks at the latest'.