A Brit regularly fibs about information technology skills (9)
I believe the answer is:
abilities
'skills' is the definition.
(skill can mean an ability)
'a brit regularly fibs about information technology' is the wordplay.
'regularly' indicates alternate letters (regularly take one letter, leave next etc.).
'fibs' becomes 'lies' (informal term for lies).
'about' means one lot of letters goes inside another.
'information technology' becomes 'IT' (common abbreviation).
The alternate letters of 'brit' are 'bi'.
'lies' going around 'it' is 'lities'.
'a'+'bi'+'lities'='ABILITIES'
(Other definitions for abilities that I've seen before include "Talents" , "skills" , "The powers to do" .)