Welcome Victoria, say, around parlour occasionally (10)
I believe the answer is:
salutation
'welcome' is the definition.
(I know that welcome can be written as salutation)
'victoria say around parlour occasionally' is the wordplay.
'victoria say' becomes 'station' (Victoria is a London train station).
'around' is an insertion indicator.
'occasionally' means one should take alternating letters.
The alternate letters of 'parlour' are 'alu'.
'station' placed around 'alu' is 'SALUTATION'.
(Other definitions for salutation that I've seen before include "Words of greeting" , "welcome" .)