Now that work has started on the new viaduct through/above Borough Market, I
was wondering how they will take advantage of the extra pair of tracks that
will be provided in the interim period before work starts at London Bridge
and its eastern approaches?

I suppose with a four track railway between the west end of LB and Charing
Cross they could dedicate them 2 to Charing Cross and 2 to Thameslink, but
AIUI the existing limitations on Thameslink peak services through London
Bridge will still be in place, so might they just use all four lines for
services to Charing Cross, with Thameslink superimposed as necessary? Has
anyone seen any details of what might happen?

Paul S