You will also be able to get BMK to do 1/350 KGV barrels for you as a custom order.
No KGV class ever had blast bags at anytime of their existence.
Post-war photos of KGV war class you will be a little limited.
Generaly speaking you will have the 1946-1949 ones such as Wright & Logan ones in and around Portsmouth.
You will have the photos showing them operating in say Australia in 1946 and also the ones just after of them coming home.
After 1949 you can find some more of them laid up in the Gareloch.
And then finally of them being scrapped in Scottish yards.
Perhaps your best source, apart form the internet (Google image search and
http://www.navyphotos.co.uk/index6.htm), would be the
To Sail No More series of photo books by Maritime Books (
http://www.navybooks.co.uk).
I'm particularly thinking of the ones with contributions by Dr Ian Buxton who has a number of photos of KGV class vessels in their final days and includes some in those books.
If you've got big money to spend I could mention several other sources as the KGV class are a well photographed group of ships.
Regards
Laurence