Need voice over artists British or European accent with dialog writing skills

We're creating an animation video in real-world context for a sales software product. We have an animation designer and we're now looking for professional voice over artists (British accent). speech must match the character and context in terms of gender, age and emotions.We need to have two versions of the same animation/script but with different voice over language to begin with: british.The overall voice over duration would be around 6 minutesWe'd also like you to be able to adapt dialogs provided by us to make them more natural so if someone in your team possesses script/dialog writing skills that'd be preferred