That looks as though it could be interesting. Seeing the amount of offices there, I'm wondering if it was a Water Research Plant too. Look forward to seeing more.
And welcome to DP.
If only mate !!! Unfortunately grass dosen't equal pound signs !! The next time you see this site it will be home to 2000 little boxes and marketed under the name of 'Neptunes Grove' !!
I am probably wrong - Have always understood that this plant treated waste/contaminated ground waters such as motorway run off, rather than raw sewage, prior to returning to local water courses.