Originally Posted by
Just This Once...
Looks like an SA-5 to me - liquid fuel sustainer section!
The missile does have a crude surface-to-surface mode with basic inertial autopilot guidance. Reasonably effective when nuclear tipped.
S-300 body diameter 500mm S-200 body diameter 830mm. Both missiles use tail steering, there are no moving airfoil parts in the BBC pictures and a sight tapper on the leading edge of the fin (which isn't the front of the section as that not straight), Part of the mid mainbody section of an SA-5 with part of the four main fins (wings) attached. Most likely lost lock and went ballistic.