LSE Question

[marsred]

Does anyone know what 'Segment' actually refers to as shown on the LSE website and Proquote system?
Its something like the FTSE sector or the market but not quite.
For example, BBY.L is SET1, JJB.L is SET3, TW.L is STMM.
Cheers all

[Horse_Apple]

SETS order book classifications.

SET1: FTSE 100

SET3: OUSIDE THE FTSE 350

STMM: SETS Market Maker within the FTSE250

[marsred]

Excellent, thank you.