You may already have left for your day out but this info. may help others for a future trip. I am sure that a
Friends & Family Railcard would offer a discount on a zone 1 -6 travelcard. Others may be along later to confirm this. There are also 2 for 1 offers in London if you travel in by train.
Myself and my wife are going to London.............
Sorry, the pedant in me has been released:-
My Wife and I are going to London.............
The use of
Myself when either
Me or
I would be more appropriate is on the increase. Especially prevalent in announcements by traincrew .
It can help to deconstruct the sentence i.e. in the above examples remove the wife (I know that to some forum members this may be a blessing - but this is not a service that I am offering

) and you are left with:-
Myself is going to London........
and,
I am going to London.......
Here endeth the lesson. More importantly, though, enjoy your day out!