I've got the info for your photo for you.
The problem with this aircraft was that the registration G-BKRG is no longer valid, it was de-registered way back in 1998. That means this is not a warbird (warbirds need to have a current civil registration). It therefore has to be entered into the database as a military aircraft.
The serial is fake. It represents 42-2429, which was a Beech AT
-7 Navigator during the war years. This is an early version of the Beech 18.
The aircraft in your photo is in reality the former 51-11665, which was originally a Beech C-45G Expeditor with cn AF
-222. It was later converted to a C-45H.
Putting all this together, this is the info your photo needs:
Aircraft Generic type:
Beech 18 (C-45/AT-11/JRB
USA - Air Force
Whatever you want of course, but please make it clear that the serial is fake, representing an AT
-7, and that it is actually the former G-BKRG, 51-11665. It's also a very good thing (almost compulsory) to mention the name of the museum in your remark, for people who do searches on that.
: MILITARY, PRESERVED, CLASSIC
By the way, the engines of this aircraft were removed, and used for the restoration of Beech 18 G-BKRN. Your photo clearly shows the faked replacement engines. Also, this aircraft was used in the James Bond film "Octopussy" in 1983, painted as "VN75WB" (it was registered as N75WB at the time). You may or may not want to mention these things in the remark...
It sure is a nice Beech...
Hope this helps,