Sending original FBR certificate with passport application (from UK)

FBR is done, now doing passport. Do people (in the UK, specifically) send their original FBR certificate or get a certified copy? I am not sure where to get a certified copy without solicitor silly money prices for a five minute job.

Or is there somewhere that can do it for a reasonable price ?

Given all the original documents for FBR came back safe and sound, and I've never had any issues doing similar, I'm tempted to just send the original.

If you've done this recently, what did you do?