Outside Tap

It's been leaking, kept meaning to fix it, so today was the day.
I had to borrow Spanners & WD40 to enable me to remove the old tap, then off I went to Plumbers Mate where they supplied me with a new tap, fixed together for me to attach.
BUT, it's still leaking, so my idea is to put a 5p inside the nut & screw it on again, but gotta turn off the Water from outside, that'll have to wait until the washing is done. O but I could turn the Washing machine off for a while. Anyway that's how my day is panning out. Fingers crossed I can fix the drip. :)