I went through a three stage process:
1) Phone interview with the UK Country Manager and one of the product managers. This was an informal but very engaging conversation about my experience, motivation, and I assume general sociability.
2) Onsite interview and business simulation with the UK Country Manager and Product Manager. The business simulation consisted of three parts: a sales call, a sales presentation, and a follow-up email. Constructive feedback was given at the end of the exercise.
3) Telephone interview with the HR advisor in Paris. She made dismissive comments about my age which made the conversation very awkward.
After one week I received a call from the HR advisor who bluntly said that I did not have any core skills. There seemed to be a total disconnect between the London and the Paris offices.