Fly to either Alicante or Valencia Airport. Lliber (Jalon Valley) is approx 1 hour 15 mins from either airport.
Most budget airlines fly to Alicante and Valencia airports from many UK airports. Some of their websites are as below:
www.jet2.com
www.firstchoice.co.uk
www.flymonarch.com
www.bmibaby.com
www.thomsonfly.com

Excellent car hire at the airports.

Exit 63 from the motorway AP-7. Turn right where is signposted "Calpe/Alicante" shortly after the tolls.

Stay on this road for aprox. 2 km. passing right though the town of Benissa until you see the sign "Jalon/Alcalali" on the right.

Turn right at this sign and stay on this road por aprox. 5 km.

You will see on your left a stone house with three arches followed by a large furniture shop with a car park in front.

Between these two, turn left (where the blue railings) down a narow road.

100 meters on the left are he Fincas.