For some reason, I really recognised the female buyer from Waterstones (the woman with very long dark hair). Did anyone else think this? I feel like maybe she may have been a buyer in a past series...

Yeah it was Young Apprentice, episode 2 with the pitch of cook book to Waterstones.

Thought I recognised her!

Never cease to be amazed by how intimately you folks on here know the show!

I know, it's tragic, isn't it?

Wow. Good eye.

I have been searching every grey cell in my head as, like those above, I was convinced I had seen her before. In desperation I thought to check on here and lo and behold there is the answer. Many thanks for posting

Me too. I've seen all bar two series (got them all on my external hard drive though) and I can't remember half of them!