Around 15 caravans arrived over the weekend and are currently using around a third of the spaces.
Officials from the hospital say they are working with the police and Devon County Council to sort out the issue.
Buses are running as usual and there are extra parking spaces at the supermarket at Digby.
Litter main environmental concern among Plymouth residents
Over 1,000 took part in consultation
Parking fees rise at two Devon attractions
Increase of 10 percent
Appeal to help Torbay's homeless
Bay's most vulnerable people at risk, says MP
Plans to save tens of millions in adult social care
DCC eyeing up external firm
Street hubs planned for Exeter
'They are a sleek and modern answer'
Sex abuse masseur jailed for four years
Ian Nicholls, 64, assaulted clients
