• Cable gravitates to 1.3500-10 option expiries before US CPI data at 1230 GMT

• 1.3527 was early London high, after unexpectedly positive UK July GDP

• US August CPI is forecast up 0.4% MM, 3.4% YY; core f/c 0.2% MM, 2.4% YY

• Hotter prints might lift dollar, depress GBP/USD to/through 1.3475

• 1.3475 was three-week low last week (1.3493 was Thursday low)

• UK inflation expectations fall after BoE changes survey provider

GBPUSD

(Robert Howard is a Reuters market analyst. The views expressed are his own)