Actually you CAN get a DBS (formerly CRB ) check for yourself now.
On the 1st of December 2012, the Criminal Records Bureau in the UK became the Disclosure and Barring Service (DBS) and made it possible to obtain a Basic Disclosure for yourself at a cost of £25 pounds. It is available from
https://www.disclosurescotland.co.uk/apply-online/ This service covers the whole of the UK and NOT just Scotland. Apparently there is a spoof website with a very similar address which will charge you £41 and simply re direct you to the proper site.
I received mine last Thursday and they are very quick. I then forwarded it to the Philippine Embassy, London, for Legalisation/Authentication at a cost of £18.
The more cynical amongst us may point to the Philippine Government simply seizing an opportunity to exploit us poor expats even further but, the British Government is no better, charging an eye watering £25 for a single sheet of headed A4 which must have take all of 2 minutes to produce.