As I have been trying to find trikes for my mother, I remembered that a couple of you have been in similar situations, although you were looking for normal trikes and preferably secondhand. However it may be that like my mum, your mum may need a bit of assistance at times! So I was looking into power-assisted trikes. They are out there, though they are not cheap, but in my search I found these two: [url=http://www.e-bikesdirect.co.uk/items/electric_trikes/electric_trikes_list.aspx]eBikes Direct[/url] in Bodiam and [url=http://www.missioncycles.co.uk/electric-trikes-c-25.html?osCsid=kbgcablebg11c564bosbihpnq4]Mission Cycles[/url] near Maidstone.
eBikes specialises in electric bikes and trikes while Mission Cycles are trike specialists, including special needs and handcranked.