Yes, so as not to violate copyright laws. Copies made from it will be of inferior quality due to the reduction in size, and thus this image is unsuitable as artwork for pirated versions of series DVDs or other uses that would compete with the commercial purpose of the original artwork.
The image serves as the primary means of visual identification of the subject, illustrating a single educational article. It is virtually impossible to accurately describe the character for a sufficient picture in one's mind with mere words.
As a promotional (nonfree) image, the image is not replaceable by free content; the copyright holders have not released similar images into public domain or allowed free use, and any other screenshot would be similarly copyrighted. While a free image of the actor could be found, any such version is not true to the original character and would be inadequate for identification or commentary.
Use will not affect the value of the original work that has been published elsewhere on the Internet or limit the copyright holder's rights or ability to distribute the original. In particular, copies could not be used to make illegal copies of the video.
Fair useFair use of copyrighted material in the context of Harry Harper (Casualty)//en.wikipedia.org/wiki/File:HarryHarper.pngtrue
Licensing
This is a copyrighted image that has been released by a company or organization to promote their work or product in the media, such as advertising material or a promotional photo in a press kit.
The copyright for it is most likely owned by the company who created the promotional item or the artist who produced the item in question; you must provide evidence of such ownership. Lack of such evidence is grounds for deletion.
It is believed that the use of some images of promotional material to illustrate:
the person(s), product, event, or subject in question;
where the image is unrepeatable, i.e. a free image could not be created to replace it;
Additionally, the copyright holder may have granted permission for use in works such as Wikipedia. However, if they have, this permission likely does not fall under a free license.
Please note that our policy usually considers fair use images of living people that merely show what they look like to be replaceable by free-licensed images and unsuitable for the project. If this is not the case for this image, a rationale must be provided proving that the image provides information beyond simple identification or showing that this image is difficult to replace by a free-licensed equivalent. Commercial third-party reusers of this image should consider whether their use is in violation of the subject's publicity rights.