Question Author
Thanks everyone. I thought further about 26) after I had posted this question and did finally come up with Chatsworth House! I would never have guessed 71) though. I doubt that Great Western Railway is correct. As mentioned, the clue is in SMART and the first word BACK. I know there are 2.5 months still before the quiz ends but as I have had the sheet since it came out at the start of September and have answered all the other questions myself, admittedly with a little research for a few of them, I do not think that asking for help with just two of the questions is too bad - and I did finally get one of them myself anyway! Thanks again everyone.