[DD.]

It only takes a few minutes to sow in pots and transplant, in fact it's probably quicker than preparing a drill for the seed in open ground, especially if you have to re-sow as you're just growing slug food. You can also germinate them a lot quicker.

[Baldy]

Just happened to have a tray of living salad - I've just tried planting them out now. If I remember the last time I tried it I had trouble with them drying out. How long till the roots get established would you guess? I can water every day till the weekend then they have to take their chances for a few days.

Pip pip,
Balders

[Hampshire Hog]

Evening Balders I have found this too. Perhaps enrich ground with some multipurpose compost and or sink a pot as per squashes. Could even add some water retaining crystals as used hanging baskets.

Good luck HH

[pigguns]

Lidl salad transplanted out for me too.  Still chopping the tops off the ones I planted out at Easter that replaced the ones in the cold frame over winter.
I'd say a few days would be ok Balders- they flop about and look really awful for a few days, but perk up after that.  I shade mine with debris netting on a frame, especially when they are establishing

[lettice]

I always grow lettuce now as come again.
My variety is French salad leaves mixed from DeRee.
Have a few pots on the go and when I start picking, then start sowing new ones.
Use small tubs to stop me growing too much.
Got some lettuce red and green salad bowl that was on a kitchen garden calendar and growing them in pots outside.
Do like this lidl method though, may give that a go too.

[JayG]

I manage to make one sowing of Little Gem last all summer by sowing them quite thickly, then part picking as cut-and-come-again and part transplanting the young plants to create a succession of mature lettuces (Little Gem seem to be infinitely forgiving!)

[Blackpool rocket]

I bet some did but the slugs saw them before you did 

Fair point but I was germinating them in a module tray? inside.
Perhaps it was too warm, although we don't have a "hot house"
I seem to remember failing last year as well.

I would say that pigguns has it right, a few days to settle in then off they go. Mine don't get watered every day.
If I remember I'll take another picture this weekend if there's any progress.

Br