Flexible University of Sussex, Brighton, UK
If you are a undergrad student, doing a voluntary internship can be a good idea to get some first exposure with research, develop some useful skills and start growing your professional network. This is not by any means a necessity or a requirement, so don’t worry at all if you cannot afford (financially or in availabilities) to volunteer, and check-out instead possibly funded positions.
Contact. Send CV to D.Makowski@sussex.ac.uk and explicitly say that you are interested in volunteering.
Don’t rely on what is written!
Ask directly members of team (current and past) about their experience in the lab!