Destroyer of a London museum and rail terminus (6)
I believe the answer is:
vandal
'destroyer' is the definition.
(I know that vandal is a type of destroyer)
'a london museum and rail terminus' is the wordplay.
'a london museum' becomes 'Vanda' (the Victoria and Albert Museum).
'and' means one lot of letters go next to another.
'rail terminus' becomes 'l' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'vanda'+'l'='VANDAL'
'of' acts as a link.
Can you help me to learn more?
(Other definitions for vandal that I've seen before include "Defacer, despoiler" , "Defacer or wrecker" , "Wanton wrecker" , "Destructive type" , "Deliberate destroyer" .)