Orbex

Orbex is a UK-based spaceflight company (Web site)

As of July 2018 Orbex has £30 million ($39.6 million) in public and private funding for the development of orbital space launch systems. Orbex hope to launch its 'Prime' Micro rocket orbital vehicle from the newly-announced UK Vertical Launch spaceport in Sutherland in the Scottish Highlands.

Currently not much is know about the Prime rocket :

Its first stage will have a diameter 1.3m and also a 1.3m payload fairing

Its engines will use LOx/LC3H8 (bio-propane C3H8) stored in Carbon Fiber tanks.

Prime has a low mass recovery and re-flight system

payload separation system called Magic

Uses in House orbital guidance, navigation and control (GNC) algorithms with its Space tolerant avionics flight computing platforms for engine management and flight control.