Mondays-Fridays The peak frequencies have been revised to operate 20tph Elephant-Queen's Park to allow two additional trains to be available for the Rail Vehicle Accessibility Regulations project. Two fewer trains required for service during the peak periods. LU and London Overground off-peak services are broadly unchanged. Saturdays Before 1000 the central area frequency has been revised to operate 16tph Elephant-Queen's Park. Before 1000 four fewer trains are required for service. After 1000 LU services are unchanged. London Overground services are unchanged.