Exhibitions in London - scuppered by National Rail

I had hoped to go to the exhibitions of Hoppe and Ida Karr this weekend, but National Rail have decided to shut a large pat of the train line into London and I really don't feel like spending an additional 2 hours on the return journey to London.  I will try again in two weeks time, when, I hope, there will be a normal rail service!  This now gives me more time to devote to getting on with the course work.