The BBC are one of many media organisations reporting this, including some Israeli ones, and many international organisations such as the UN or Amnesty have investigated and reported on such. So I'm confident what the BBC and many other organisations are reporting is true as this has been reported on over many years.
Also the settlements in West Bank have already been ruled illegal under international law. The theft of Palestinian land by the Israeli Govt is also fact as they announced it.
You can support Israel as is your choice. You asked the question so I just pointed that Israel is using violence, taking hostages or enabling/supporting settlers to steal land from Palestinians. The same as Hamas bar Hamas aren't helping Palestinian settlers steal Israeli land.
Love to know how the BBC manage to operate with all the biases they are supposed to have.