Well lot of this is helpful, thank you.
I have a number of restrictions.
My property is rented, so I can`t start putting in rockwall filled frames, and also, the room is fairly small.
So Foam sound treatment is the best option for me.
I was given a link to an amazing place here.
http://www.johnlsayers.com/phpBB2/in...803a03579a4055
Which just about covers or can answer all studio design questions.

Also I have found a really cheap accoustic tile producer.
http://www.acoustic-foam.co.uk/
Who are cheaper than everyone, as they are a foam factory, rather than a sound company.

I am intending to bass trap the vertival and horizontal corners behind my monitors, and behind the control seat.

I will also add scatter tiles on the left and right walls (assymetrically) to stop any exponential reflection.

In the position directly behind the desk I will be fitting some broadband absorbers to the wall, this should aid in deadening the sweat spot.

I`m still not sure to do about the bay window, as I am going to write to the guys at studio design for suggestions.
I may end up getting some accoustic screens and putting these straight across the bay to square off the room, (well, not straight across, more, kinda jagged).

When it`s all done I`ll report back and let you know how it`s all been.

Once it`s done, Nightwatch Studios will be open for business!!!!