The QARN statement on indefinite immigration detention (see here) has now been adapted by Quakers in Britain and may be used in correspondence with press and local MPs.
The UK Government’s Coalition Agreement committed the UK to end the detention of children for immigration purposes. Yarlswood Family Unit has been replaced by Cedars, opened in August 2011, with capacity to detain up to 9 families with activities provided by Barnardo’s. Detention should be limited to 72 hours, with ministerial authorisation, this may take place for up to 1 week. Immigration detention, however, remains for many adults. Where you have first-hand experience of detention, this is an issue that could be helpfully raised with your constituency MP.
See also the Migration Observatory
16 May 2012