Wood Bed Slats or Planks of Wood (Penzance TR18)

Hello,
We are in need of some wooden bed slats or clean planks of wood of similar thickness ie 1.5cm. We need the flat solid wood bed slats (not the thinner slightly curved ones) and a mix of the following lengths: 54"/137cm or longer and others that are no shorter than 24"/61cm. If you happen to have any we'd be very grateful even if you only have a few as any will be welcome.
Many thanks for reading.