Okay then, the sources...
https://bustimes.org/services/b1-basildon-bus-station-gt-knightleys-telephone-ex#map
https://bustimes.org/services/b2-basildon-bus-station-basildon-hospital-laindon#map
https://bustimes.org/services/b3-basildon-hospital-felmores-shopping-centre-pits#map
https://bustimes.org/services/b4-basildon-bus-station-long-riding-buckerills-pit#map
https://bustimes.org/services/b5-basildon-bus-station-festival-leisure-park-gard#map
https://bustimes.org/services/1a-basildon-bus-station-whitmore-way-pitsea-tesco#map
https://bustimes.org/services/9-basildon-billericay-brentwood#map
https://bustimes.org/services/10-basildon-hospital-shotgate#map
https://bustimes.org/services/21-central-basildon-vange-pitsea-north-benfleet#map
https://bustimes.org/services/22-canvey-leigh-beck-basildon-bus-station-via-link#map
https://bustimes.org/services/25-southend-travel-centre-southend-hospital-raylei#map
https://bustimes.org/services/28-southend-benfleet_pitsea-basildon#map
https://bustimes.org/services/94-basildon-south-woodham-2#map
https://bustimes.org/services/100-chelmsford-billericay-basildon-grays-lakeside#map
https://bustimes.org/services/104-basildon-laindon-great-berry#map
https://bustimes.org/services/300-chelmsford-basildon#map