McKenzie confirmed that Baku will air on Channel 4, with the final day of Royal Ascot being bumped to one of the supplementary channels (More4). Practice sessions will air on Channel 4, where possible, with Lee McKenzie presenting these. I’ve asked the question on the whole scheduling aspect, and I will update this part as and when I hear anything.
http://f1broadcasting.co/2016/03/08/analysis-on-the-ground-at-channel-4s-f1-press-launch/