The image is an advertisement for the North London Lines train system. It is titled "Catch the Right Train" and has a blue background with white text. The top of the advertisement has the logo of the company and the words "North London Lines" in red and yellow. Below the logo, there are three images of the train, one of which is a red and white train with the London Underground logo on it. 

The first image on the top left shows the train on the left side of the image, which is the District Line. The second image is of a yellow train with a red stripe on the side, and the third image is a black and white photo of the same train. The train is on a railway track with a blue sky in the background.

Below the images, there is text that explains the different types of trains available in the system and how they can be used to catch the right train. There are also three flags of different countries - the United Kingdom, the Netherlands, and Japan - on the bottom left corner. The text on the advertisement explains that the trains are available in different countries and that they are available for purchase.