to anyone who knows the area........does this plan make sense? Planning on parking up at Watford Met (how much to park?) and getting the tube to Baker St (40 mins?) then change to Shepherds Bush (15mins?) How much is travel likely to be for 2 adults and 2 kids (ball park fig?). Cheers muchly.
For Charlton... I parked in Edgeware and got the tube, it was £6 for parking for the whole day in a secure car park, and tube took about half an hour to get into London. Easy peasy, right next to the M1(Junction 5, I think).