Complex sentence: Monday to Saturdays, there is an hourly service from Mill Hill towards Preston and Blackpool South, westbound and Blackburn, Burnley Central and Colne eastbound.
Split into simpler sentences: Monday to Saturdays, there is an hourly service from Mill Hill towards Preston and Blackpool South. Westbound there is an hourly service to Blackburn, Burnley Central and Colne eastbound.