8D. Penny dropped! Bloody hell, what a word play! I was "convinced" that Broads was a red herring for "girls", "gals", etc. Thanks guys.
17A. Nah, I can't think of any "concealed boundaries" (thanks anyway!). It matters not, I have the answer, so I'll wait for the end of month explanation.
Why four more years? No real reason, my dear old ixion, it's just 'cos I was listening to the Obama speech at the same time as I typed my text.