U.K. broadcaster Steve Lamacq is departing national top 40 station BBC Radio 1 after 16 years.

Lamacq has been introducing the Radio 1 audience to alternative, indie and rock music since he partnered with Jo Whiley on "The Evening Session." When Whiley got her own show in 1997, he went on to present "The Evening Session" alone for five years until 2002 and also presented the weekly "Lamacq Live" show on the network until 2006.

Lamacq continued to champion new bands on his weekly one-hour Radio 1 show at 9pm on Monday evenings, but he will now depart the station as part of wider shake-up of the schedule.

Oasis, Coldplay and Blur were among the bands Lamacq championed in the '90s, while in recent years he has helped to popularize acts such as Arctic Monkeys, Keane and Bloc Party.

"It was a wonderful opportunity to try and subvert pop music radio from within, which I hope we managed to do more often than not," said Lamacq in a statement. He will continue to present a weekly show on AC network BBC Radio 2 and a daily show on digital DAB modern rock station BBC 6 Music.

It was announced last month that daytime presenters Whiley and Edith Bowman would be leaving Radio 1. The further announcement of evening changes today (Aug. 10) includes a new Monday night music documentary strand, "Radio 1 Stories," while Nihal will host a new review program on Tuesday evenings.

"In New DJs We Trust" on Thursday from 9-10pm will give exposure to rising club DJs such as Jaymo & Andy George, Heidim Alex Metric and Toddla T.

"Radio 1 must continue to evolve to help sharpen our offer to younger audiences," said deputy controller Ben Cooper in a statement. "We're committed to delivering the best content to our audiences and our refreshed schedule reflects this."

Andy Parfitt, controller, BBC Radio 1, added: "Taken together with our recent revamp of the core daytime schedule, this represents one of the most significant shake-ups of the whole schedule in recent times and will help us focus on a new generation of Radio 1 listeners."

The schedule changes take effect on Sept. 21.

Meanwhile, Radio 1 hip-hop DJ Tim Westwood will also take on the drive-time show at digital DAB urban music station BBC 1Xtra.