S18 E1: Rude

S18 E2: Ruff and Ready

S18 E3: Road and Rail

S18 E4: Restaurants

S18 E5: Rubbish

S18 E6: Ridiculous

S18 E7: Revolutions

S18 E8: Reflections

S18 E9: Radioactive

S18 E10: Rest & Recreation

S18 E11: Roaming

S18 E12: Rejoice! A Christmas Special

S18 E13: Rogue

S18 E14: Random

S18 E15: Rock 'n' Roll

S18 E16: R Animals