We were wracking our brains trying to work out where the London Underground station really was. Searching the net was no help. In fact, I found another person who was also trying to work out where it was filmed. Fortunately, a regular contributor to the blog was also watching Poirot and we had the same discussion, but he managed to take a number of screen shots including the ones below:
However, we still couldn't actually work out where it was filmed. It's obviously a station that was around in the 1920's or 1930's when the story was based. The outside shots looked like they could have been a set, but the ones inside definitely looked like a real Tube station.
I asked another contributor who was likely to know and he came up with an excellent suggestion. Neil checked it out on Monday and took a shot of the lines from the station in question.
So can you also work out where it is? This time, one guess only please and as usual to enter, leave either your email address and/or website or blog in the comments below.
You have until 23.59 on Sunday 30th April to enter. In the event of more than one person guessing the correct answer, Neil's paperclip selection will come into play.