Well I contacted Andrew Taylor-Cummins from Anaconda Basses who had this to say -
"Thank you for getting in touch and for reminding me of this Bass. I’m very excited to see it, as I sometimes wondered what had happened to the handful of Ostinato Basses, that were built prior to Anaconda Basses.
It is indeed a very early Anaconda Bass, before I decided to go full-time building Basses. Ostinato Basses were effectively the fore-runner of Anaconda Basses.
It would probably have been built around 2010-2011.
I’m pretty sure the body is Idigbo, The Top is definitely Lacewood.
My recollection is that they were Killer Basses. Then again, i am biased"