Contact wire and catenary seems to present the full length of four platforms, albeit on temporary fixings in some places.
The main reason for my trip was to take some pictures of the tunnels at Farnworth before the main work begins there in May. I had foolishly failed to get any shots of the tunnel mouths when I took my "before" pictures of Farnworth Station a couple of years ago.
Very simply, the plan is to reline and strengthen the small tunnel and then use single line working through that while the larger tunnel is bored out to make it big enough for two electrified tracks. At the end of the work the smaller tunnel will be redundant.