Related Clues:

• It's a bit thick to have to draw about five hundred of this
• Tip of the S?
• Just the tip of the L - not the l - by the sound of it
• Just the tip or SSSE, perhaps
• To make it wide put five hundred more into 21 across
• It's wide enough if you start to use your loaf
• Broadly speaking, one might use one's loaf to start this
• Start to use your loaf, in the broad sense
• The tip that London gets, by the sound of it
• Not mean to give this S, perhaps
• Just the tip of the capital S, by the sound of it
• Use your loaf to start in the wide sense
• Take a tip from this that it's L, not 1
• The tip of L not 1, by the sound of it
• Use your loaf to begin to be wide