Onward Tickets from Sarajevo to London

Do I need an onward ticket to enter Bosnia?

ENTRY REQUIREMENTS An alien may enter BiH if he/she possess a valid passport or other identification document that may be used for entering BiH, provided that: -it is valid for at least three months longer than the intended date of departure from the territory of Bosnia and Herzegovina, and

• it was issued within past ten years or is a document of permanent validity.

A visa may be issued at the border only if an alien: -meets general requirements for entry to BiH under Article 19 (1) and (3) of the Law on Aliens, - proves that he/she was not able to pre-apply for a visa, and -presents one or more documents to evidence the unpredictable and imperative reason(s) for entry into BiH as well as to guarantee a return to his/her country of origin or habitual residence.