I have readen the entry for Rington in yours guidebook "Around Britain". I have to congratulate you, because the guidebook is very complete. But I think that it would be improve in some aspects.
Firstly, when you talk about the gifts of the souvenir shops, you could mention too, besides local honey and jam, the little clocks mades by the old artisan of the town. As for the "Dylan's", nowadays, the prices don't be too expensive. They have a cheaper menu for the tourists. Finally, the river isn't as polluted as a few years ago. Now, laws are more stricts, and people respect the river very much.
That is all, I hope that my advices will be useful for you.