I agree that it looks like a lovely "as converted matching" 1945 set (i.e. still has the first scope assigned to it) No. 4 MK. I (T).
You are fortunate as it seems that most of the No. 4 sniping equipment sets we see in North America are mismatched.
The No. 8 MK. I scope case is interesting in having a 1945 date. I have two with 1941 dates and the rest are undated. This is the first one I have "seen" with a 1945 date.
The missing strap on the No. 8 MK.I scope case is typical for some reason. We are still waiting for someone to find the box(-es) of leather carrying straps that were removed! For those missing a strap, Moore Leather in Scotland makes nice replicas.
https://www.milsurps.com/images/impo...tinstrap-1.jpg
http://www.mooreleather.co.uk/sniper...ap-no-32-scope
Moore also makes replica scope caps as well as carrying handles and hinge stops for the No. 15 chest and leather goods for other sniper rifles an so forth. I have purchased a carrying strap and No. 15 carrying handles from Moore Leather and am pleased with the products. They are not cheap, but then they are made in the same country as the originals were made (check the DNA on the leather ;-) and are not cheap copies made "elsewhere".
A question for Peter Laidler and others - Was it a standard operating procedure to remove the carrying straps later in service?