Hi, Wondering if I could get some advice. Just bought my first house. No issues in home report, built in 1970s. An internal wall was removed downstairs between the kitchen dining area. Got a building regs surveyor out to look at it and they confirmed that joists were perpendicular and it wasn't load bearing. Stupidly didn't get a full survey. Mortgage went through no problem. We've been in 2 months and I've noticed in the hallway landing upstairs (in line with the start of the stairs) that the floorboard takes a step down. It seems to be directly over the load baring wall, running in the same direction as it. Originally I rolled a ball and the back of the house is flat and so is the front of the house so it's not really a slope. I lifted the carpet there is definitely a difference in height. It's made obvious on the skirting board as there is more space between the skirting and floorboards after the height difference (at the back of the house). Not measured it yet but can do tonight. There are no big cracks or anything but an internal door on the first floor at the back of the house sticks. Also some creaky floorboards at the front of the house. I am now of course freaking out thinking this may be subsidence or structural movement from removing the stud wall. I suffer from anxiety and it's making me ill. I originally thought I could just get a joiner to come and lift floorboards to check the joists and then do any work to level the floor.... but now thinking I should maybe get a structural engineer? 1. Worried that there is current movement and will take £ to correct/affect the future value. 2. Worried that there was historic movement, settling and by highlighting this I will need to declare it to home insurance/future buyers. 3. Worried if I just get a joiner that there is something more seriously wrong. Could it be non structural/subsidence related? What do you think?