The header logo on the NHS Core Site pages needs to be 104 pixels high and around 630 pixels wide, though the site will accomodate different widths.

To set the logo, form the home page of the site enter Edit mode and add your logo to a suitable place in teh file strcuture (click the File cabinet icon to open the file broswer and drag and drop youlogos and other images into one of the folders).

Choose Edit dynamic properties (it's the 3 little coloured cubes!) and type, select or drag the logo from the folder.

At the bottom of the page click Save