As an EEC citizen YOU do not need a VISITORS VISA to stay on holiday. But be carefull - once you've been here 183 days non-stop you CAN be considered "resident". If it's your gap year - I'd AVOID THAT HAPPENING.

If you intend to work here however you will need to register as a resident at once.

Other than that - I guess it's all a case of common sense. Basically what would you do if you went to live in another UK city away from home. Except beware of "Wolfs in sheeps clothing" - there's a tendency to believe that ones own countrymen in a foreign country are more trustworty. It's sadly often not the case. Look ALL gifthorses in the mouth, untill you develop a 6th sense.