This bird has been wintering from January 2014 in Colin Bradshaw's garden in Tynemouth.
At Paul Massey's blog Good Gull Bad Gull it can be read that
"Information received yesterday (Friday 21st) from Martin Collinson and his team at Aberdeen University, shows that:
'The DNA sequence was identical to that from several Kazakhstan specimens of Lesser Whitethroat thought to be blythi' whilst, 'Svensson, and prior DNA work, suggest that both blythi and halimodendri are in a Central Asian clade that is distinct from curruca'."
The bird was filmed by Jonathan Farooqi on Febuary 22nd. 2014