Train expert in roses in a different way (6,7)
I believe the answer is:
orient express
'train' is the definition.
(the Orient Express is a train service)
'expert in roses in a different way' is the wordplay.
'in a different way' indicates an anagram (letters ordered a new way).
'expert'+'in'+'roses'='expertinroses'
'expertinroses' with letters rearranged gives 'ORIENT EXPRESS'.
(Other definitions for orient express that I've seen before include "Famous railway train" , "Famous luxury train" , "Luxury passenger train service, started in 1883, originally from Paris to Constantinople" , "Paris-Istanbul train" .)