Unidentified Scilla species

[Bateman’s1634]

Trying to ID this bulb, almost certainly Scilla rather than Hyacinthoides as there is one bract below each flower. Peduncle 12cm - 15cm, 3-7 leaves. Pyramidal with lower flowers opening first moving upwards. Flowers typically blue with some pale almost white variants, see photos. UK zone 8. I have one species in mind but won't lead your ideas by mentioning which. Thanks, Len