From Watford Junction train to Euston Underground Station then Tube to East Finchley Underground Station. 33 min £9. From Watford, Beechen Grove line 142 bus to Brent Cross Shopping Centre then line 143 bus to East Finchley, High Road East Finchley. 1 h 47 min £3. From Watford taxi to East Finchley. 19 min £64. From Watford drive to East Finchley. 19 min £2.