Several phone calls, questionnaires, emails and references later, I had my interview this morning, which lasted over two hours and was pretty in depth. The outcome of all this is that I passed and I'm now considered serious puppy walker material and it's all down to me. I just have to give them a date for a go-ahead!
Initially I was told because Nell was a German Shepherd I might be offered one of those, but actually labs are far easier to train, so I've opted to go down the easy route as a first-timer.
It's going to be quite a commitment, and I'm not even sure that I'll do it this year, but the thought of welcoming a puppy into my home as a job of work that offers so much back to the community brings a huge smile to my face!