Comparing Blakes' 7 teleport to Star Trek's transporter....

The rules for Blakes' 7 were more defined and rigid. 1. You needed a teleport bracelet. 2. You needed to be within close range, usually low orbit above the destination point, implied as line of sight.

With Star Trek, anything goes.
Blake's 7 still found contrivances to intermittently lose teleport capability to ratchet up tension (e.g. a crewmember would lose their bracelet, or an enemy ship approaching meant they had to move out of orbit and lose teleport capability). But the rules were consistent, adhered to, and made conceptual sense. With Star Trek, it feels entirely arbitrary.
The scriptwriters don't want beaming to be possible? Just say 'too much radiation' or 'moving too rapidly' or 'too much interference' or 'not enough energy' or whatever. The scriptwriters want beaming to other side of the galaxy... sure, just insert techno-babble.

Why even have space ships if you can beam anywhere, anytime?