Like a number of new homes we have large sections of south facing glazing.  For a variety of reasons we don't have large overhangs nor, due to planning restrictions, can we have brise soleil.  I am investigating external blinds, preferably a mesh that will still allow some light and view whilst reducing over heating.  I have found an interesting company Renson (industrial and domestic products) has anybody used them?  What products/solutions have others used? 

Another possibility is a UV-blocking film that can be applied to the windows.