Need Advice
 

Anyone have any advice on how to visit the following cities, from and back to London, using oneworld airlines (or BA Executive Club or Qantas program affiliates), must be in a vaguely circular route in order for the travel office at work to accept it (and not including the internal Indian flights, naturally): Tokyo, Hong Kong, Singapore, Delhi, Mumbai (Bombay). Many thanks.

How about:

LHR-NRT BA
NRT-HKG CX
HKG-SIN CX
SIN-BOM CX (via BKK)
BOM-DEL (no OW carriers)
DEL-LHR BA

it may be cheaper with OWE

LHR-DFW-NRT BA/AA
NRT-HKG CX
HKG-SIN CX
SIN-BOM CX (via BKK)
BOM-DEL (no OW carriers)
DEL-LHR BA