My F&P excellence 6.5, smart drive 9. Trouble on spin cycle. It does a wash?

Hi my washing machine is playing up. It does up to the end of the wash cycle and then attempts to drain and spin but doesn't unless I let it rest for 1/2 hour or so. It makes noise as it attempts to continue however it cannot discharge the water and complete a wash without a waiting period. I wonder if this is a simple case of worn belts (do they use belts?). Thank you if anyone is able to head me in the right direction.