Officers cordoned off part of Hartlebury Trading Estate at around 6am this morning (Friday, July 12).
Police said a 37-year-old man was later arrested on suspicion of actual bodily harm.
Police tape had been put up, blocking off the entrance to GMS on the industrial park.
A cordon with cones and tape encircled the frontage of the industrial unit with a single uniformed officer at the scene.
Darren Burgess of Rowan UK, tool and industrial supplies, based in one of the industrial units nearby, said: “We saw the police cordon and that the old bill are there but we haven’t got a clue what’s going on.”
Chris Stevens, also of Rowan, said the garage was a father-and-son business which carried out MOTs. “We hope everyone is well and okay,” he added.
A spokesperson from West Mercia Police said: “We were called to Hartlebury Trading Estate at around 6am this morning, Friday 7 July, following a report of an assault.
“A 37-year-old man was later arrested on suspicion of actual bodily harm (ABH).”