If I understand this correctly, even though I had unremitted gains from previous years, the gains are not carried forward. So my capital loss in 2008-09 is not jeopordised by prior year gains when considering if less than £2000.
There are two separate issues here.
Whether you meet the below £2,000 test for 2008/09 is determined ignoring any capital loss for 2008/09 (or indeed any other tax year). Similarly, unremitted capital gains of other tax years are irrelevant in determining if you meet the below £2,000 test for 08/09.
However, in ascertaining your actual UK capital gains tax liability for 08/09 (nothing to do with the below £2,000 test) any capital loss of 08/09 is in principle offsettable against any capital gains of 08/09 (an election possibly being necessary).
Also, I acknowledge the staement "So say you have foreign income of £2,500 and a capital loss of £1000 you do not meet the criteria.". However in this case, if more than £500 has been remitted back to the UK in 2008-09 I assume the criteria is now again met as 'unremitted' income for 2008-09 is now back below £2000.
Correct.