The B451 is a short B-road running parallel to the Bakerloo Line in Northwest London.
It comes off the A404 Harrow Road by Kensal Green station (although originally it started slightly further West). If your vehicle is more than 6'6" wide then do not use this road - there is a width restriction just after you enter it - instead stay on the A404 and use the B450 Kilburn Lane to meet it further up (or even stay on Kilburn Lane when it becomes the B413 then join the B451 at Queen's Park Station using a bit of Salusbury Road).
As soon as we enter the B451 the road bends to the right so we are heading East along the original line of the B451. In spite of its classification it really is not a main road, and you will have to squeeze in behind parked cars if there are oncoming vehicles. We meet the Chamberlayne Road which to the South is the B450 but we cannot turn onto this road, either right or left. From the opposite direction we are allowed to turn left.
Then the road changes name to Harvist Road and does widen a little up to Queens Park station, where we can turn onto Salusbury Road if we wish. This road is unclassified but the B413 is just the other side of the railway if we turn right - this is why I suggested earlier that traffic should prefer this route and only join the B451 at its last stretch which is Brondesbury Road, which takes us to Kilburn. If you actually want to go to Brondesbury itself, turn left onto Salusbury Road which becomes Brondesbury Park.
Assuming it is Kilburn you do really want, you will reach this at a busy junction with the A5 Kilburn High Road a few blocks further east.
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