You could have at least made an effort to park on the bit with the road entry 😉
Yellow lines apply to both sides of them – ie the road and the pavement.
When I was a student I used to park in front of our garage here: https://goo.gl/maps/LFgn7Xm1gZo
My car fitted perfectly in the space (admittedly just touching the garage door) and I had been doing so for over a year and regularly saw traffic wardens checking cars in the restricted parking just up the road.
One day I came round the corner to see 3 council tow trucks taking away all the cars that were parked in front of the garages and a little old lady standing infront of the tow truck taking her little Metro away. Apparently someone with a pushchair complained they could not walk in front of the garages due to the cars parked on what we considered to be driveways. The council plans even showed that the little gravel area in front of each garage belonged to the property.
Cost me over £180 to get my car back. Consider yourself lucky as I would say you were obviously parking on the pavement and/or private land depending on the boundary.