It really depends on the location of the burst pipe. When I had a burst pipe in my bathroom, I looked all over YouTube looking for a tutorial on how to fix it, but I couldn’t find a straight answer about what to do. Personally, I think your best bet would be to call a plumber as soon as possible.
When I had my leak, I called a plumber in Worthing. They were able to come out to me as an emergency and they arrived pretty quickly. Turns out that the pipe that was burst was pretty hard to get to and I could have made a real mess trying to get to it myself. If you want to minimize the amount of damage to your bathroom, get professional help as soon as possible. It may cost money, but it will save you a lot of time and stress.