32

You need a "Temporary Worker - Charity Worker visa (Tier 5)" to work as a volunteer for a charity, which Kew Gardens basically is.


6

The UK government website for Standard Visitor Visas explicitly says You cannot: do paid or unpaid work [some other things] so that definitely isn't the right visa. The more detailed guidance says (on page 22): Volunteering Appendix 3 allows visitors to undertake volunteering (not voluntary work) provided volunteering is not ...


3

Voluntering on board of a cargo ship can be hard as Henning wrote in a comment. On some cargo ships however once can rent a passage. I for instance found this German prospectus with a ship touching Haifa: https://frachtschiffreisen-pfeiffer.de/reisedateien/programm/Pfeiffer-Programm-Suedeuropa.pdf (2nd entry on page 4) If one can join in Haifa or only ...


2

Appendix V to the immigration rules says: Visitors Appendix 3. Permitted activities for all visitors Volunteering 4 A visitor may undertake incidental volunteering (i.e. the main purpose of the visit is not to volunteer), provided it lasts no more than 30 days in total and is for a charity that is registered with either the Charity Commission ...


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