Compost or gravel for pot drainage (BA13 Westbury)

It's coming up on time to get the garden going again and I was wondering if anyone has any supplies to clear out before I buy new.

I'm looking for any kind of compost, part bags or full, whatever age.

I'm also on the look out for gravel or stones to put in the bottom of pots for drainage, any colour, part or full bags would be absolutely fine.
Many thanks