I see 79% or so for that cohort in UK, 75% for France. Unemployment - 5% in UK, 13% in France, an eight point difference, offset by roughly half via inactive differential.
Agreed on the in school statistics for 19-24, and my unesco figures are only obliquely addressing this. Fai de bèn a Bertrand, te lou rendra en cagant
Employment level is quite close, and don't forget that part time is circa 25% in the UK vs 17% in France (43% vs 31 for women).
http://www.dnet.at/elis/Arbeitsmarkt/aminter_TEILZinter_en.pdf
The UK and France situation are very similar except than France went for the 35 hours work-week and UK for the 20 hours work-week :).