I'm afraid we dont get much call in Peterborough! Most of our work is in London and the southern counties, we have a 4,500 litre reef tank being shipped out to Jordan in August for Queen Rania - wont be much to look at until its setup tho lol.
Anyone who worked at thomas cook here in peterborough has probably seen the 2 big water features they had until recently, they neve cleaned them though so they never ran properly :(
I think they have been scrapped now but they were awesome when they first went in!
I am afraid that when I left the hobbyist trade (retail) and moved into bespoke installations that a lot of the focus IS put onto aesthetics rather than hobby itself. The benefit is I get to design huge aquariums with unlimited budgets in nice countries
One thing I should point out is that often (particularly in reef aquariums) when you move onto very large scale tanks the general laws of mixing fish simply dont apply. Fish respond to very basic stimulae, i.e. small fast fish sees a predator and shoots off. At this point in a big enough tank the small fast fish generally reaches a safe distance and is ditracted by something different. In the average hobbyists tank, even if it is 7 foot long its not enough space to allow for such behavior.
I have always said fish operate on basic impulses (which has nothing to do with the intelligence or memory debate) and stress is quite natural, they can handle a lot of it. The problem comes when they are in captivity and they cannot find any way of escaping local stresses.
As a final note I will point out that I HATE parrotfish as well
If you thought what I said was useful go here www.warehouse-aquatics.co.uk and buy some cheap stuff from my mail order site to save money! - Because thats also useful.