Organised transport I appreciate crossing loch (12)
I believe the answer is:
businesslike
'organised' is the definition.
The answer and definition are different parts of speech. However, adjectives and past participle verbs occasionally define each other.
'transport i appreciate crossing loch' is the wordplay.
'transport i' becomes 'busi' (I can't explain this - if you can you should give a lot more credence to this answer).
'appreciate' becomes 'like' (I've seen this in another clue).
'crossing' means one lot of letters goes inside another (to cross can mean to go over or around).
'loch' becomes 'ness' (Loch Ness in Scotland).
'busi'+'like'='busilike'
'busilike' going around 'ness' is 'BUSINESSLIKE'.
Can you help me to learn more?
(Other definitions for businesslike that I've seen before include "Professional" , "Efficient" .)