While it would be fantastic to always have your own unique professional images sometimes stock images are required.
are a number of premium stock images sites such as Shutterstock but
luckily if you want some free ones there are also lots of great free
stock images sites.
Some require an attribution but many don’t so you
can use these in a professional and commercial capacity to your heart's
a new addition for 2018 is Pikwizard who have some fantastic and exclusive free images. Some are editorial only so make sure you check before using them in an advert but the quality of photos is fantastic