You can Buy Bicerin di Gianduiotto liqueur at the following retail outlets and online stores.
 

Belsize Village Delicatessen       Deli Delize D'Italia
39 Belsize Lane                                 70 Lupus Street
Belsize Park                                       Pimlico
London                                                London
NW3 5AS                                           SW1V 3EJ
Map and Directions                                 Map and Directions

Emilia's Delicatessen                    Gerry's
88 New Kings Road                          74 Old Compton St
Fulham                                                Soho
London                                                London
SW6 4LU                                            W1D 4UW
Map and Directions                                 Map and Directions 

Gastronomia Italia                          Italian Food Hall
8 Upper Thachbrook Street             The Broadway
Victoria                                               Crouch End
London                                                London
SW1 1SH                                           N8 9DE
Map and Directions

La Bottega Del Sole                       La Picena              
323 Fulham Road                              5 Walton Street
Fulham                                                Knightsbridge
London                                                London
SW10 9QL                                         SW3 2JD 
Map and Directions                                 Map and Directions 

Monte's Italian Delicatessen         L. Terroni & Sons
23 Canonbury Lane                           138 Clerkenwell Road
Islington                                                Farrigdon
London                                                 London
N1  2AS                                               EC1R 5DL
Map and Directions                                  Map and Directions  

The Rosslyn Delicatessen             Utobeer
56 Rosslyn Hill                                     Borough Market
Hampstead                                          Southwark  Street
London                                                  London Bridge
NW3 1ND                                             SE1 1TL
Map and Directions                                   Map and Directions 

Online Stores

         Drinkon.com