True Islands have a specific definition, many of these are rocks/ledges etc.
Burnt Island - North-west St Agnes, east of Annet
Crows Island - South-east Northwethel, south St Helen's.
Crump Island - South-east Tešn.
English Island - South-east St Martin's, east of Higher Town Bay
Foreman's Island - Between north-east Tresco & south-west Tešn.
Green Island - East of Samson, west of Nut Rock
Guther's Island - South Guther's Bar, between Tresco and south St Martin's
Hangman's Island - East Bryher, north of Kitchen Porth
Innissidgen (Island) - North-east St Mary's, north Helvear Down
Merrick Island - West Bryher, west of Great Porth.
Merrick Island - East Bryher, east of Green Bay
Newford Island - West mid St Mary's
Peashopper Island - South-east Northwethel. South St Helen's
Pernagie Isle - Far north of St Martin's, west of White Island.
Plumb Island (1) - North-east St Martin's, north of Pernagie Point.
Plumb Island (2) - Mid west Tresco, opposite Church Quay, Bryher.
Puffin Island - North-east Samson, south-west Tresco.
Ragged Island - East of Little Arthur, west of Menawethan.
Rat Island - North of Hugh Town, St Mary's, now joined to St Mary's Quay
Round Island - North of St Helen's.
Skirt Island - East Tresco, south of Pentle Bay.
Stony Island - East of mid Samson.
Taylor's Island - West of mid St Mary's.
The Island - East of Church Quay, Bryher.
Toll's Island - East St Mary's, north of Pelistry Bay
Tolman Island, Old Town (actually a peninsula)
Treweeke's Island - North coast St Martin's, east of Turfy Hill.
White Island (1) - North St Martin's.
White Island (2) - West of south Samson.