Stuart,
I'll try. Though most will be obvious.
1. We still continue to increase our water usage.
2. If EVERYONE turned off the tap when cleaning our teeth it would avert a shortage!
3. Mid Herts is the highest consumer - this is where the water just runs off Andy's suit when it is in the wash and it goes into overload.
4. Bewl is now 80% full up from 30% because of emergency pumping from the Medway.
5. A poll showed a 50/47 split in favour of metering, but it was explained that it is complex in that some areas really need metering because they are inherently short of water whereas others in the North and West have no need because water is plentiful and always will be.
6. They followed the water usage of a family in Herts, husband, wife, teenager, child, baby. Collosal usage. 14 washing machines usages a week etc but not metered and had little idea how heavy their usage was.
7. Possbility of temporary desalination plants using osmosis being setup mentioned though I can't remember how viable they are; this was proposed to alleviate temporary shortages, say for somewhere like the IOW.
8. Water transference via canals explored but explained that as lots of hills generally too expensive or difficult to actually get enough water to the right place, though it is done in one or two places but only because the geography is right.
9. Showed the Pang near Reading; dry as a bone; I saw the Crane yesterday near Cranborne - very low already though not abstracted.
10. No mention that I recall of increased house building/run off/demand in SE which is contributing to the problem.
11. Latest washing machines/dishwashers reducing usage considerably.
I think that's most of it.