Oh Emma, PLEASE slow down with things here and don't make any quick decisions with any large amount of the money you inherited-especially not ALL of it!!! No matter what, you inherited a large amount of money and depending on how you spend money, it could keep you happy and financially secure for a long, long time. Now, this pub purchase MAY (or may not!) end up being a great purchase for someone else, but no matter how good it looks to you or any of us, don't do it! Trust me, if you look hard enough, a deal that's just "too good to pass up" will come along over and over again, there will be many more like this. Rehabbing a property isn't as easy as it might seem from first glance or from the shows on TV, and usually it ends up costing a LOT more than you had planned, no matter how much effort you put into the planning.
My advice that I am 100% sure about, would be to not make ANY big purchases yet, not even a car for example, let this all sink in for a while and take time to really decide what you want to do with this wonderful gift. At the same time, you should immediately start looking for some sort of financial advisor, but take your time with this and really do your research! With financial advisors, there are good, bad and ugly ones out there, make sure you find a good one who's job would be to handle how your new money is invested, whether its in the bank, in the stock market, real estate, or wherever, not just someone who wants to sell you a bunch of different stocks, for example. Then, once you know that your money is safely invested where it will continue to grow for you, take all the time you need to decide what your real goals are in life. Maybe after all of that, you will come back to basically the same plan with the pub, maybe not but you will then go into that deal the right way!