"Depends how you feel most comfortable travelling. " darren-b
sis another suggestion:
1.from waterloo station take the Bakerloo Line towards Queen's Park Underground Station
or Bakerloo Line towards Harrow & Wealdstone Underground Station
2. Get off in Charing cross station
3. Outside charing cross station, turn left.you will see the trafalgar square, and the national gallery.(just pass outside national gallery the second street i guess is suffolk street. me mapa ng Pilipinas sa labas ng embassy)
http://journeyplanner.tfl.gov.uk/use..._TRIP_REQUEST2