I’ve changed the handlebars to a cheap copy of the Jones loop bar:

Definitely much more comfortable for me. Also there are lots of alternative places to put my hands:
- Near the ends for an upright position
- Crossbar near the stem
- On the loop at the front for a lower position
The friction brake control won’t go on as its bracket is designed to slide on over the end of the bars. I’ll work out a way round that once I’ve decided exactly where it needs to go.
Still love the bike, and so do the kids!