Mark Warner operates at the top of the holiday market, charging up to £8,000 for two weeks abroad for a family of four.
It makes a point of offering "award-winning" childcare.
That award-winning care didn't extend to checking my CV, contacting my references, doing a criminal records check or even asking to see some basic ID. Again, I could have been anyone.
I worked at Mark Warner's swanky Hilton resort in Dahab, Egypt, where the luxurious hotel rooms are built to resemble a traditional whitewashed Arab village.
Despite being promised two days' training at the interview, I was thrown straight in with a group of toddlers.
Once, there were two of us looking after 13 children - when Mark Warner's own regulations state there should be no more than six per adult.
When I asked about my training, the manager just said: "You don't get official training as such. It's very relaxed, very laid-back here."
This is unlikely to be the approach parents think they are paying for.
Next, I was asked to supervise the children on the beach. Again, no one had checked if I had any swimming or rescue qualifications.
Even more worrying, I had to take children out on a boat without enough safety gear for all of them. When I raised the issue with my manager, he told me to go ahead with the boat trip anyway.
Also, for such a prestigious company with an upmarket reputation, Mark Warner has a very cavalier attitude to the employment laws of the countries where it operates, and is not controlled by Ofsted.
Like many of its staff in Dahab, I was there on a tourist visa.
Mark Warner should have paid for work permits but instead had us break Egyptian law on their behalf.
We were told we should just lie and say we were there on holiday, but Egypt is not the kind of country-where you want to end up in prison.
Three weeks after I returned from Egypt, the disappearance of Madeleine McCann from a Mark Warner resort in Praia da Luz in Portugal made headlines around the world.
No one blamed the company or its staff for the little girl's disappearance, but given the case, I assumed the company would toughen up its vetting of nannies.
To test this out, a BBC colleague applied for a Mark Warner childcare job and was sent to an upmarket French ski resort.
Her false CV went unchecked and, months after the disappearance of Madeleine McCann, the company still didn't do a CRB check before she started work.
http://www.dailymail.co.uk/femail/article-526248/The-shocking-truth-daycare-nurseries-creches.html