Rear brake pads fell out!!! Urgent help needed

[Bnmtuning]

Driving along today and heard an almighty bang, went to slow down to pull over & NO BRAKES!! Pads had fallen out, and the piston has popped out. Iv managed just by searching that it's the brake fitting kit is the thing I need. The monkey who owned the car before me probably didn't put any pins in, unless they just randomly fell out.

I'm in Leicester, does anyone know of any motor factors that are open tmoro & are likely to sell the parts I need? (I already have a spare set of pads lying around somewhere )

Cheers

[Bnmtuning]

Sorted it today managed to find a parkers open. It's worth a check that you make sure all pins ect are there and are secured properly! I'm just lucky I didn't cause a huge accident