Many thanks guys. Barn Owl I'll have a search through the birdforum pages as I'm sure this question is as common on there as "What hammock/sleeping bag is best" on here

! I'll see what I can find and will keep you all posted.
With regards to the "entry level". I understand that with optics you get what you pay for but basically Im hoping for the same experience as I had with my bins. I'd been looking at Leica, Swarovski, Zeiss etc etc for years but could never afford them. Then heard about the Nikon Sporters at Warehouse Express going for £100 (reduced from £200) and the good reviews that they had received. Took a risk and bought them. Landed on my feet as they are excellent bins. I was astounded at how good they were for such a little price, light years ahead of what I had been putting up with previously.
Since I've had them Ive had many chances to compare them along side all the more expensive varieties of binoculars in a most light conditions and if truth be told I (with my untrained eye) cant see any optical difference at all?!? Ok the other more expensive makes are quite a bit lighter and generally a bit more compact but in the great scheme of things for the same optical quality but reduced price Im willing to carry the extra few pounds, I'm a big lad so it doesn't hurt

! In the mean time I can save up for the lighter more expensive varieties ....... however I feel Ill be using the Nikons for a looooong time as they suit my need perfectly.
When I was doing my bins research it seemed to me that there were 3 price brackets. Budget level poor quality optics and heavy/bulky. Mid level good quality optics but fairly heavy/bulky. High end good quality optics and the lightest, high tech materials used in the construction. Its all about sacrifices really. Im happy with the mid level as I dont think I need the high end which probably only your most dedicated and serous twitchers will need.
At the moment Im looking at the Kenko, Opticron, Nikon and Kowa brands (£300-400) as I think these are probably the more mid level scopes. The next step up as far as I can see is to the Leica, Zeiss etc which are twice (or more) the price.
Barn Owl, I didnt realise that eye pieces arent included in the price

thanks for pointing that out to me! Oakleaf, Ill keep an eye on the objective lens is it a case of the bigger the better (I see they generally go up in 10s with the majority of them being around the 60mm mark)?