Browser extensions you can use include:
Alternatively if you wish to watch British Live TV from outside the UK:
Click on UK Live TV on the left, you will be presented with all the usual British TV channels.
You can then either watch in Standard Definition (SD) which is free or click on High Defintion (HD) which is a paid for service.
Then just click on fullscreen and voila you can watch all your favourite British TV programmes, exactly like as if you were in the UK.
Obviously though account for the time difference in the country you are located and plan accordingly.
Note: You can also watch FilmOn from inside the UK as well.