Oxford Circus is on the Bakerloo, Victoria and Central Lines. Take the Regent Street exit and walk along Regent Street towards H&M. After 300m, turn right into Conduit Street.
Piccadilly Circus is on the Piccadilly and Bakerloo Lines. Cross Piccadilly Circus onto Regent Street. Walk along Regent Street for about 600m, just after Hamleys turn left onto Conduit Street.