Damaged bifold wardrobe parts
Thanks for writing in! The block used with the hardware on your door reminds me of the 23-407 Corner Block. Carefully look over the dimensions to confirm it is the right replacement.
The top guide, with the wheel on the pin, can be replaced with the 23-120 Top Roller Guide. You'll need the 23-115 Spring Loaded Top Pivot to replace the top pivot pin and the 21-092 Screw Driver Bottom Pivot to replace the one with the spring.
I'm not sure that these parts are available to purchase in the UK but we do ship there. The shipping costs and options can be viewed once you've added the items to the cart, before completing the checkout process.