It is often difficult to find work alongside a Professional Psychologist until you have graduated. You should think about the type of environments Developmental Psychologists work in and the type of people they work with in order to complete relevant work experience. Undergraduates will often need to complete voluntary work in order to go on and obtain paid work.
The following points include examples of relevant work experience, some include jobs in the local area.
The University of Southampton runs a programme for a Voluntary Research Assistant (VRA). This is unpaid and usually runs over the summer. It is a great opportunity to increase your chances of achieving a place on a postgraduate course. In addition, the researchers could write a letter of reference for you.
Activity volunteer for CCHF All About Kids. They need volunteers to motivate and inspire disadvantaged children.
ABA tutoring (your department usually informs you when these opportunities become available).
A Criminal Records Bureau Check will be needed if you are working with children or sensitive information.