Yes, plenty of fish in the Thames now, even the occasional salmon. Fish ladders have been installed alongside all the weirs. I think in fact water quality generally has gone up hugely. Just goes to show what can be done, once government and industry get the bit between their teeth and make real change happen. Now, we need the same effort on CO2 emission and non-critical use of plastics. On CO2 it is under way, (painfully, in some countries, including Australia). I was surprised and impressed to find that, even here in the UK, 25% of electricity generation is now from renewables. In N Europe the figure is a lot higher. On plastics we are at the starting gate. Here's hoping.......