Heritage Crime Lawyers - Deliberate Destruction of Human Remains

What is the penalty in the UK if a developer deliberately destroys historic human remains on their site? I'm a writer and I'm currently writing a story which starts with the uncovering of a small historic (pre-16thC) human burial on a building site in central London. Can someone tell me what the penalty is for a developer/construction firm if they deliberately destroy historic human remains in order to avoid a delay to their project? Also, is this common and are there any recent real cases that would be helpful for me to look at? Thanks