One size of advertising format for train stations is a 6 sheet which is 1.2 metres by 1.8 metres this form of advertising is common to see when going down the escalators in a train station this form of advertising starts as low as £170 for a 2 week window of advertising this size of poster is good because it can be used to advertise a range of products and is easy to see.

Another advertising format is 48 sheet this format comes at a dimension size of 6.096 metres by 3.048 metres this format is common to see behind the train and is also, a lot bigger than 6 sheet which mean that it has a bigger image meaning that it is more suitable for certain products such as car companies and travel companies this format starts as low as £325 for a 2 week advertising period.

Another form is 96 sheet which has the dimensions 12.192 metres by 3.048 metres this format starts as low as £625 for a 2 week advertising period this form of advertisement is good for bigger companies that want their product to be known a bout and seen however this is not efficient because it costs a lot compared to other choices.

There are also digital billboards for all the stated sizes these are good because the image can change and it is also easier to see in darker lit areas however it costs more compared to paper billboards so it is more likely that a bigger company would use these such as a company advertising a new movie.
