Welcome Money. Sorry things are temporarily so tough, but we'll keep you going. I'm also on a very low income and entitled to claim JSA, but I don't at present, as I can just about get by with child tax credits and child maintenance ( my XH is a relatively high earner).
I didn't go to the museum, as nobody else was bothered and I wasn't sure I had enough time. Instead, we took my niece to the park and had a nice lunch out, while her mum (my sister) went shopping! Lunch came to about £15 for me and DS. I then had to top up our Oyster cards again, by a fiver each, only to reach Kings Cross to find all trains on the east coast line were cancelled, due to storm damage to overhead lines!
The ticket inspectors told us to go to St. Pancras and get a train to Sheffield from there and then try to get a Cross Country train further north, as tickets were being honoured by all train companies. Given the circumstances, we were incredibly lucky to get seats on the Sheffield train and later on, our train to Durham. We had a Burger King meal each while waiting for our connection, which was £8.78. We reached Durham at 8.20 p.m., about an hour and fifty minutes late, so it could have been a lot worse. That said, I will put a complaint in. I did it before when this happened a few years ago and I got 2 free return train tickets. I also had to shell out £20 for a taxi home, as our last bus left before we got to Durham and £1.33 on milk, bread and chewing gum. Phew! Delighted to be home.