End indefinite Detention

Immigration detention centres are officially called Immigration Removal Centres, as their stated purpose is to hold people who the government intends to deport from the UK. Around half of people in immigration detention are asylum seekers, and many have family ties in the UK. Over 30,000 migrants are detained in the UK every year.
There are, at present, 11 detention centres in the UK. (This figure includes Short Term Holding Facilities.) Some are run by private security companies, others by the Prison Service. People in detention cannot leave and have very limited freedom of movement within the centres. Security levels are similar to prisons
People are detained for a very long time by the UK Border Agency when they cannot return to countries like Zimbabwe or Somalia because they are too dangerous. Others cannot be deported because they do not have a passport and their Embassy refuses  to allow them to return. People are not able to leave Britain but instead of being released, they are kept in detention indefinitely.
Most people find long-term detention intensely traumatic. Not knowing when you will be free is damaging to mental health. People who have been tortured or imprisoned in their home countries are particularly scarred by long-term detention.
Indefinite immigration detention is arbitrary from beginning to end. A person doesn’t know when they will be detained; and when they are picked up, they won’t know where they are being taken. Very often, the only belongings they will be allowed to take with them are the clothes they stand up in. Likewise, they won’t know when, or how, their detention will end. Durations vary, and detention might be only a matter of weeks, but it could just as well be months or years, the whole point being that the person detained doesn’t know. This isn't for committing a crime. It's purely because their applications to be in Britain have been refused, or are still being processed.
The UK is the only country in Europe which locks asylum seekers up indefinitely.How would you feel if you had to flee your home for fear of persecution, risked everything to travel to another country in the hope of safety, only to arrive and be detained, often without explanation or any indication of when you at be released? Would you not agree with me that it would be a completely  dehumanising experience.Alternatives to detention are cheaper, more effective and avoid the harm of detention.  States that have tried working with migrants in the community to resolve their cases have found that most comply with immigration requirements, for a fraction of the cost of detention.
Please sign the below petition from the Green Party of England and Wales to demand an end to this cruel, unnecessary practice!
https://action.greenparty.org.uk/detention