OK Guys,
Thanks for all the comments and advice, I've decided to print flyers off my computer.
I managed to scrounge four packs of A4 card off a friend who works in an office and a large paper cutter. I can get two flyers off an A4 card, then cut them into shape with the machine.
I took into account newspaper advertising and decided that as we are stretched to the limit at the momement, we would'nt be able to cope with a surge in new clients and having to find extra staff.
Therefore, with the flyers I can target the type of clients I want.
Regards Dave