Stopover in London

I love London...everything about it. I love how everyone talks and the phrases they use and the buildings. I'm not a big fan of British Airways though. Last night my 4 hour layover turned into a day and a half layover.
About half hour before my flight, we boarded the plane like usual and sat at the gate for about a half an hour because they had lost some luggage. Then we sat on the runway for about two hours. When the pilot informed us that there was some minor technical error. We sat on the runway for about another hour when the pilot said that our minor technical error was that the second engine wasn't working. He said it was possible to fly to Uganda but he didn't wanna "risk it." I very much respect the decision (and am kinda of confused why he even debated the other choice). He informed us that we could fly out on another airplane and they just had to switch all the bags and food over so we could take off shortly. We waited another hour for them to switch everything over. We then boarded buses on which we waited for about another half hour for them to tell us that they cannot fly out to Uganda because one of the runways were closed. About a minute later the pilot came on the PA and said, "there is a second shorter runway in Uganda and we are doing calculations to figure out if it is long enough to land on." Now I wanna know what their margin of error on these calculations are, like, if it's rainy are we just going to slide right off like a slip and slide. It didn't matter because a few minutes later the pilot said that that runway is closed as well. Now our flight was rescheduled for tonight more than a day later. In total we waited till 3 in the morning and like 5 of those hours were on the runway. On the brightside the airline gave us hotels and meal vouchers and I get to see london. Well that's all for now. I will update you next week when I'm actually in Uganda.