British missile in simple vehicle (6)
I believe the answer is:
barrow
'simple vehicle' is the definition.
'barrow' can be an answer for 'vehicle' (barrow is a kind of vehicle). I'm unsure of the 'simple' bit.
'british missile' is the wordplay.
'british' becomes 'b' (abbreviation e.g. in 'BBC').
'missile' becomes 'arrow' (arrow is a kind of missile).
'b'+'arrow'='BARROW'
'in' is the link.
Can you help me to learn more?
(Other definitions for barrow that I've seen before include "Small hand-propelled cart" , "Cart for carrying small loads" , "Grave mound - wheeled handcart" , "Handcart; burial mound" , "old burial ground" .)