One brand means only one logo, surely? Well in theory yes, however, there are technically several versions of the logo which you can use, depending on the requirements of the content you are working with.
For applications where a logo will be placed over a dark background, a white version of the logo should be used. However, on lighter backgrounds, the full color or all-black version will be suitable.
For optimal design, we suggest you use PNG versions of the logo without a background, so the logo is integrated neatly into your designs.
There are also versions with and without a strapline. Use these at your discretion, whichever matches your chosen format effectively.