Writing boards

A writing board for retaining material for writing on, the writing board comprising a main board defining a surface and a material retaining arrangement configured to retain material on the surface, the retaining arrangement comprising a retaining portion moveable between a first retaining position at which the material can be retained thereby on the writing board and a second retaining position that allows the material to be removed from the writing board, and resiliently compressible clamping material located between the main board and the retaining portion when the retaining portion is in the first retaining position, the clamping material comprises a foam, rubberized or elastomeric material and is attached to one of the retaining portion and the main board, the retaining portion bearing a first part of a two part snap fastener which the first part is releasably engagable with a second part of the two part snap fastener located on the writing board, one of the first and the second parts having a projection that locates in a re-entrant portion in the other of the first and the second parts to extend through a hole in the material being retained thereby when the retaining portion is in the first retaining position, the clamping material is compressed against material being retained when such material is present, said compression being caused and maintained by movement of the retaining portion into the first retaining position, and the compression of the clamping material causes the clamping material to exert a clamping pressure on material being retained.