If they were enormous, then probably kolkwitzia. It says on the label 'large shrub'. When I was little, I used to have a den underneath one in our garden. It was 12 ft tall. Weigela, after about 5ft or so, starts to look woody, perhaps a bit leggy, and old. Kolkwitzia absolutely hangs with masses of soft pink, orange speckled throated flowers, whereas weigela, although it can crowd the stems, doesn't hang in such masses, it's slightly stouter woody stemmed.

Wow, thanks Worthy! That's so useful. I'm sure you are right because today I was lucky enough to join an outing to The Royal Landscape, and we had a wonderful walk around the Savill Gardens. There I saw a shrub that was VERY like the one I'd seen, and the label said "Kolkwitzia". So now I know . . much appreciated.