Yes, yellow lines apply to the whole of that side of the 'highway', which includes areas such as verges and footpaths as well as the actual carriageway.
For many years, Sheffield Wednesday fans used to park on a wide verge, near to the Hillsborough ground, on match days. One day traffic wardens came along and issued 'tickets' to about 80 cars. The drivers' protests made headlines in the local paper but the tickets were upheld because there were double yellow lines on the carriageway.
Chris