The big blue marker that has A Christmas of Sorts on shows the spot.

Found some pubs nearby too:

• 1: The British Lion 7.54
• 2: The True Briton 5.08
• 3: The Pullman 5.08
• 4: Stones 4.58
• 5: The Guildhall 3.56
• 6: The Royal George 2.07
• 7: The Samuel Peto (Wetherspoons) 1.58
• 8: La Vue 1.58
• 9: East Kent Arms 1.57
• B: The Richmond Tavern
• C: The Raglan
• D: The Martello