First time buyers - just secured a new house and got the keys.. what to do next?

Hi All,

Before I get into this, do know I have a to do list but I've made this post because there's sooo much going on at one time that something can always slip ubde the radar.

So my question is.. what should you do immediately after getting the keys to the house?

And.. what should you check straight away?

Thank you in advance for the comments too! This sub has been a massive help throughout the process!!

Edit: Oh crap... didn't expect so many responses!! Thanks for all the comments, I would have done this individually but I wasn't expecting this so thank you sooo much!!!