I bought the Pibow Rainbow compatible with RasPi 2 and RasPi B from Maplin in the UK.
Is there anyway I can make the GPIO pins available as there does not seem to be slots or cutouts that make this possible!
You’re possibly looking for the Coupé top, which is available here: https://shop.pimoroni.com/products/pibow-modification-layers
You drop a few layers from your PiBow, stick the Coupé top on, and can plug add-ons right onto the GPIO.
The alternative is to route something like Black HAT Hack3r out of the case: https://shop.pimoroni.com/products/black-hat-hacker
You can either go out through the side by snipping a portion of the case away, or through a Coupé top.
I’ve been known to get a bit… uh… creative… with my pin breakouts:
