
The 20-year-old has joined the Pilgrims on a deal running until the end of the season, following a successful loan spell with Northern Premier League high-flyers Hebburn Town.
Cameron made 42 appearances across two loan stints with the Hornets – as they chase a first-ever promotion to National League North.
He is registered and eligible to make his debut against Woking on Tuesday evening, having been allocated squad number 21.