Ellekit, It's perfectly fine to have a real Christmas tree at your home. I always do this every year because it's more enjoyable, natural and I'm tired of always seeing my kids interacting with artificial objects. However, after the holidays there is a lot of rubbish that has to be remove with the Christmas tree such as food waste, hazardous substances etc. that's why I always call Allan's rubbish removals and get all my household waste removed after Christmas. They cover all London areas and are real professionals