I ordered a Tens Machine from Tens Machine Direct and not only did it not turn up but they didn't answer my emails and there is no opportunity to call them as they don't have any numbers on their site.
When I googled them I found this horrific page of complaints against them: www.resellerratings.com/forum/merchant-discussion-shopping-advice/136451-tens-machine-direct.html
Do not deal with them as they are rip-off artists, taking advantage of mums at a most vulnerable time when they need as little stress as possible.
I ended up having to give birth without this pain relief as couldn't organise something else in time.
They also go under the names:
www.angelcaremonitor.co.uk
www.respisensemonitor.co.uk
www.maternitypillow.co.uk
www.pregnancypillow.co.uk
www.tensmachines.co.uk
Cheers! Alli