I know you mean well with your question. But you really can and should do better. Your question is vague in the extreme and gives the impression you haven't done even the most basic of research. "Anything good to see in London" - really?
I would suggest you spend some time in the UK & Ireland forum doing some reading - there are lots of threads on things to do in London, Glasgow, Edinburgh etc. Also, try Google and Trip Advisor "what to do in ..."
People here will be happy to help you with advice and opinions on an itinerary you have worked out. They will not be happy to do the research for you.
Also, I'd suggest you'd better off saying what you are interested in, what your budget is, when you are going, traveling solo or with other(s) etc . All that information helps.