It seems that Sports Winner and Titanbet (neither of whom are on Oddschecker) are now the only two firms other than Betfred that offer any Lucky bonuses. What a retreat by the other bookies, who've all dropped the bonuses without saying anything:
One winner in each of my Luckies; Dotties Dilemma W8/1 in the first, Luxor W 3/1 (4/1) in the second. Also a couple of seconds in my first.
Lost overall, equivalent to about 90% of the outlay for one of the Luckies. Wlda been a lot less if I'd done win only, and at these prices that makes more sense.