If you are running a translation agency in London, there is a good chance that you have a quite a few clients who will be giving you a steady amount of income that you can keep using to enjoy your life in more ways than you would have initially realized. However, if you fail to keep these clients happy you are going to end up losing them, and this will lead to your income drying up. Another thing that could happen is that you would not be able to get any more clients until and unless you try to specialize in certain things.
One mistake that the people that run certain translation agencies often end up making is that they fail to look into the various ways in which a good quality translation can actually help them out quite a bit. They try to focus on the more general aspects of translation and forget that there are more things that you need to do if you want to make the most of your lifestyle. You need to specialize in certain languages and find a niche there that would supply you with a regular income that would never end up drying up at all.
The thing about translations London is that the field is very diverse, which means that you can find a lot of things to specialize in. One of the most profitable industries within translation involves legal documents and visa processing. People that are coming from outside England are probably not going to speak English, and thus they will need your help to translate their documents into the appropriate language and they would definitely be willing to pay a pretty penny for the services you are providing.