On line 249 of style.css change in #page
the width: 760px;
to width: 855px;
On the very next CSS element down, on line 258 of style.css, change in #header
the width: 758px;
to width: 853px;
Further down on line 324, change in #footer
the width: 760px;
to width: 855px;
Still further on line 583, change in #sidebar
the margin-left: 545px;
to margin-left: 640px;
Then to finish the job you need to open the following files in GIMP or Photoshop or something you prefer to edit images. One file at a time, cut the image in half and move the right side over 95 px, copy a 95px wide rectangle piece from the right side of the left half of the image (the piece next to the open space you just created), paste the copied piece into the new open space in the middle of the image, resave each image and reupload them:
https://www.flatwebb.ukfsn.org/Hindon/news/wp-content/themes/default/images/kubrickbg-ltr.jpg
https://www.flatwebb.ukfsn.org/Hindon/news/wp-content/themes/default/images/header-img.php?upper=006633&lower=006633
https://www.flatwebb.ukfsn.org/Hindon/news/wp-content/themes/default/images/kubrickfooter.jpg
peace~