I discussed in brief

There are several mistakes in your writing. It is not clear to me what your question is. Could you be more specific?

We briefly discussed the interview when we met in Vienna. I intend to submit this interview to one of the British radio (TV) stations for broadcast in a special program. I am going to contact them next.

Is this close to what you are saying?
When you were in Vienna, I briefly discussed with you the interview, which I intend to broadcast on a special programme on a British channel; and I am ready to proceed to the next step, which is to contact that channel.

Thank you yes it is perfect, this is what I meant

I am extremely happy and honnerd to interview you about your work and experience

When you were in Vienna, I briefly discussed with you the interview, which I intend to broadcast on a special program on a British channel; and I am ready to proceed to the next step, which is to contact that channel.
There are more than 45 British television channels, but the one on which I

any good, any mistake

I am extremely happy and honnerd to interview you about your work and experience

When you were in Vienna, I briefly discussed with you the interview with you, which I intend to broadcast (Will you broadcast it, or will the station broadcast the interview?) on a special program on a British channel; and I