Related Clues:

• Caledonian novelist is hard on pencils
• Caledonian will be put out by this cost
• Walter is hard - it's his language!
• Unexpected costs hit northern folk
• Costs hit this nationality badly
• People producing alternative to schist
• Habitually tight, pinching clubs from St Andrews?
• Author, his novel, and his nationality
• Author is hard to follow, like others of his ilk
• Silence surrounding model, back on bed, showing tongue
• Like the people who invented golf
• Glaswegian, perhaps, given to habitual drinking round clubs
• One of the big six energy suppliers
• Glaswegian, possibly, rather like Sir Walter?
• Maybe Celtic sofa initially like a bed?