SENSITIVE documents detailing addresses and home security pin numbers of vulnerable people were found in a gutter.

The care worker rotas, owned by Plan Personnel, were discovered by a passer-by in a parking bay near shops in Dellsome Lane, Welham Green.

The Welham Green man contacted the WHT in the hope of getting the care service provider to improve security measures.

The man, who only wished to be known as PJ, said: “It tells you which houses are vacant at the moment.

“Plan Personnel told me they’d be carrying out an investigation.

“It’s not good is it?”

The documents comprise three pages of 37 addresses of vulnerable people from Brookmans Park, Welham Green, Northaw, Cuffley and Potters Bar.

They also detail what food to prepare for the residents and details of their medication and hospital visits.

‘PJ’ added: “It’s a bad breach of security. “I’ve sent it to you so it can make them [Plan Personnel] pull their socks up.”

He knew of one woman on the list who was left “very distressed” about the breach.

The county council awarded the contract for adult car provision to out-of-town firm Plan Personnel in 2008, at the expense of three WGC companies, claiming the quality of care should be the same, if not better than before.

A county council spokesman said: “Plan Personnel has assured us that they have taken the appropriate action to address this issue, which includes the precaution of contacting anyone whose details were on the paperwork.

“They are investigating how this happened and will take measues to ensure that it doesn’t happen again.”

And Julian Hutchings, the firm’s director of care, said: “We take any such breach very seriously.”

He confirmed one person had been suspended pending the outcome of the investigation.