Alisdair,
it happens to us all!
Here are a few more liliums in our garden this year:
orange Oriental-Asiatic Lilium
deep pink O-A Lilium, maybe 'Cocopa'
Lilium longiflorum 'Illusive' being elusive under an apple/crabapple
Asiatic 'Red Life'
'Pearl Jennifer'
Tango Lilium 'Thesire'
'Tiny Padhye'
Longiflorum-Aisatic 'Royal Sunset'
'Sweet Surrender'
yellow O-A Lilium
cheers
fermi