Calling all armchair generals! Boudica's Last Stand.

[Nathan Ross]

I have difficulty visualising the battlefield. 
The more I read into this the more I fely that Tacitus and Dio were writing stories as Hollywood might say “based on real events”.  And we know how accurate that might

This might help

   

But could the defile not be between hills but large water obstacles?
The more I read into this the more I fely that Tacitus and Dio were writing stories as Hollywood might say “based on real events”.  And we know how accurate that might b

I would think not. The word always seems to refer to a gap, valley, street, throat or narrow constricted area. Since, as you say, southeast England is short on gorges and glens, we're probably looking for a relatively shallow pass or valley with slopes just pronounced enough to funnel the British advance towards the centre of the Roman line - assuming the Britons are less likely to charge up hills, especially when Roman cavalry are occupying the heights above them.

I could not fathom out why he went to London unless to get something
The more I read into this the more I fely that Tacitus and Dio were writing stories as Hollywood might say “based on real events”.  And we know how accurate that might b

As we discussed above, London was certainly the second largest and possibly by AD60 the largest Roman settlement in Britain, with a large population of vulnerable Roman citizens. It was likely the seat of the procurator and had his officium and all his official files and records (including tax records). It was also the entrepot for the Gallic trade, its wharfs the quickest route to the continent, and its warehouses full of imported grain that Paulinus needed to supply his men and Boudica needed to supply hers. Bearing all that in mind, I would say it was a critical military objective. As soon as Paulinus withdrew from London his communication link with Gaul, and therefore with Rome, would be effectively broken.