The Swytch kit has been a very handy add-on to my Brompton. I'd been considering adding electric assist for several years but was always deterred by the complexity, price and inelegance of most options on the market. The Swytch kit solves those problems very well by integrating the controller and battery into a single item that attaches via a sturdy bracket. I had a few teething problems which were swiftly dealt with by the Swytch team and it has been running faultlessly since. I can now ride longer distances without worrying about getting tired or sweaty; I can tailor the difficulty of the ride to suit my needs on the day. Hills and headwinds cease to be a barrier to enjoying a ride.