An urgent overhaul of hospital security was launched in Isle of Wight hospitals last night after a man was found to have "walked in" to an NH Walk-In Centre in Shanklin.
Sources close to NHS authorities on the island described the security breach as "embarrassing."
At the centre of the storm is 46-year-old Whiteley Bank man Milton Polyester.
He said: "I had a few days off, so I went for a walk round Shanklin and I saw this sign at the hospital that said 'Walk-In Centre' so thought I'd have a look.
"I went through the door and no-one gave me a second glance. It started to rain outside and I noticed there were some magazines lying around so I decided to have a sit down. There was quite a few people in there but I found a comfy seat and picked up a magazine.
"Then I noticed a couple of vending machines - it was a while since breakfast so I got myself a pack of crisps, a chocolate bar and a cup of tea, which was a bit weak.
"After a couple of hours a nice young lady came and asked me what was wrong. When I told her that nothing was, she asked me if I was waiting for someone and I said 'no' and she said that I should leave. It had stopped raining, so I left.
"It was very strange."
We immediately contacted the NHS on the Island. A spokesman said: "This is an embarrassing breach of security and we have launched an inquiry with immediate effect."