Well our friends at WRAP (the Waste and Resources Action Programme) have developed the colour coding system which you probably recognize called OPRL (On-Pack Recycling Label). And soon to come will be a system for labelling even disposable packaging with a consistent label scheme. Take a look at their Recycle Now website for loads of information on what to recycle, where, and how: https://www.recyclenow.com/local-recycling.