Getting a job as a research technician is possible with science A levels, Highers, BTecs or GNVQs. Research assistants and more senior technicians usually have a science degree. After this you can go on to combine your research with teaching in a university or you can choose an industry-based career, perhaps moving into management. Ask your careers teacher to make contact with your nearest university. They may be willing to arrange for small groups to look round some of the research departments.
Some scientists give talks about their work.
Read magazines like New Scientist and Focus.