A charity set up by the so-called 'posh bible' Debrett's has warned of a huge disparity between the chances on offer to people at different ends of the social spectrum in an age where nepotism matters more than ever.

In a report on work placements, the Debrett's Foundation said privileged youngsters got the best placements and 72 per cent of privileged young Britons said they had used family connections to secure their dream internship.

Its report today claims that 25 per cent of all young people think the system for getting work experience placements and internships in Britain is not fair.

The Debrett's Foundation was set up last year by the prestigious Mayfair-based business to promote social mobility, amid concerns about the high proportion of millionaires and former public school boys in Government. Its report is based on research with more than 3,000 young people aged 16 to 25 - plus a further 2,000 people aged over 30.

The Foundation said that "somewhat depressingly" young people rate factors including a double-barrelled surname, the school you went to and an acceptable accent as extremely important factors in landing work placements and internships.

Researchers looked at how many young people secured work placements in London and found that only 15 per cent of state school children did, while the figure was 32 per cent for their private school counterparts. Many from less privileged backgrounds did not even apply for placements in London due to living and travel costs.

The report lays bare the extent to which internships are now an essential part of the path into employment.

The Foundation says that in stark contrast to previous generations, who on average only had to do one work experience placement before landing their first 'proper' job, today's graduates have to go through the process seven times. One in 10 young people confessed to having completed 15 placements before signing on the dotted line for a job they wanted.

Joanne Milner, CEO at Debrett's, said: "With young people having to complete seven work experience placements before landing the job they want, it's safe to say that Intern Britain is here to stay. Securing the right work experience placement is difficult, considerably more so if you don't have the right connections.

"Nepotism isn't any more widespread than it was in the past, but it has a greater impact today. There are so many candidates for the top graduate jobs - it follows that those with the best experience have a better chance of securing them."