We know of 54 pubs in Cornwall & Scilly Isles that serve Guinness.
Click on the pub name for more information.

Pub Name	Location
Galleon	Fowey
St Aubyn Arms	Praze-an-Beeble, Nr Camborne
Royal Oak	Lostwithiel
Phoenix	Callington
Carriers Inn	Bude
Doom Bar	New Polzeath, Wadebridge
Turk's Head	Penzance
White Hart	Churchtown, Ludgvan
Carters Pub & Restaurant	Trebetherick, Polzeath
Maltsters Arms	Chapel Amble
Countryman Inn	Norh Petherwin, nr. Launceston
White Hart	St Teath
Cornishman Inn	Tintagel
Molesworth Arms Hotel	Wadebridge
Red Lion	St Kew Highway
Bullers Arms Hotel	Marhamchurch, Bude
Oystercatcher	Polzeath
Old Custom House	Padstow
Borough Arms	Dunmere, Bodmin
Cornish Arms	St Tudy
Halfway House Inn	St Jidgey, Wadebridge
Springer Spaniel	Treburley, Launceston
London Inn	Padstow
Mariners	Rock
Rock Inn	Rock, Wadebridge

match 1 to 25 from 54 possibilities