It happened on the B3081 near Verwood - he had to be cut free by firefighters.
Police Find Keypad Surveillance Footage
Detectives who have recovered suspected surveillance footage are appealing for anyone recognising the location to come forward.
Detective Constable Andy Haworth, of Dorset Police CID, said:
“We have recovered what we believe to be surveillance footage of premises possibly in the west of Dorset.
“It shows a member of staff outside a location with a key pad visible through the glass door.
“I believe that the key pad entry code was obtained by the person who took this footage and I am therefore keen to identify the premises themselves to ensure the security has not been compromised.
“Anyone who recognises the location or the person pictured should contact Dorset Police urgently on 101.”
Witnesses and anyone with information should call Dorset Police in confidence on 101.
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