In this post in the Van Life Q&A, a user asks:
What are your luxury essentials?
Seems like you’d get over 100kg very easily by the time you add basic gear, water, etc.
I don’t know how that works in the UK. Is it actual weight or vehicle weight rating? If weight rating, have you weighed the van? The rating is often significantly more than the vehicle is before it gets loaded.
What would the next step up take to get licensed for?