Without India the whole Asian & Indian Ocean central aspect of the Empire goes. The results in no Malaysia, Singapore, Hong Kong, Arab states and the lack of a need for Suez makes Egypt less likely.
When African colonialism comes along, Britain would be much weaker. Especially if Italy and Germany unite quicker and get their colonial muscles flexing earlier. Britain would probably want to focus on the Atlantic and Southern Africa. However, these already have competition. So not much more territory in these areas. So British Africa would probably be like OTL but without Egypt, Sudan, Kenya, Uganda & Tanzania. If you get a stronger Portuguese position then no Zambia, Zimbabwe or Malawi. Plus maybe recognizing the Boer states.
In the Americas, I doubt the US would really go to war with the UK but they could still get all of Oregon country if Britain was really weak.
My (very quick) attempt below