Temporary posting to France

Hi

I'm an Australian national, residing in the UK on a Tier5 Youth Mobility Visa. An UK agency has proposed a 6mths contract that involves working 3days in London and 2days in Paris. The contractual arrangement will be something like: Me -> My UK Ltd Company -> UK Agency -> Client. I would like to emphasise that I will be contracted to a UK firm and posted out to France temporarily as opposed to working for firm in France directly.

I do not need a visa to enter France (short term < 90 days total) but will I need a work permit?

This (http://travail-emploi.gouv.fr/informati ... ,8988.html) suggests that as long as I am employed by a UK firm and have the right to work/reside in the UK then I do not need a work permit for France on a temporary posting there.

Can anyone advise whether or not I will need a work permit?

Thanks