Only the following LNER trains will run on ASLEF strike days (LUMO and Grand Central will run normal services)-
Edinburgh to London at 0830, 1030 and 1630 (the 1030 on 12 May is now sold out)
London to Edinburgh at 0730, 1000, 1200, 1400 and 1500
Extra services will run from Newcastle at 0730 and 0856
Extra services will run to Newcastle at 1600 and 1800
A few extra trains will run to and from York. Leeds to London is served direct at 0800 only, then a shuttle to Doncaster at 0945, 1145, 1345, 1545, 1745 and 1845.
The only direct train to Leeds from London is at 1703, otherwise there are shuttles from Doncaster at 0819, 0944, 1115, 1315, 1515 and 1715