After much research I ordered two Swytch kits (pro) for our two Bromptons. I ordered in March 2020 and the kits duly arrived in December 2020. Nine months, but to be fair COVID was right in the middle, which nocks three months off, and probably another month for getting back into operation again. All in all I was very happy with the time frame. Being Brompton specific, the kits fitted very easily, even coming with Brompton specific PAS sensors, giving ample choice of which sensor fitted best. The fitting guides and videos were a great help. The hardest part for me was fitting the handlebar mount, as on Bromptons the cockpit is rather cramped, but it did finally fit. If you own a Brompton with sport (straight) handlebars, there will be no problem whatsoever. I had an initial problem with some defective parts, but after a couple of emails and a zoom meeting with an engineer, the replacement parts were duly dispatched and arrived quickly. I found customer support to be good, all communication is by email. Not being able to phone is unusual, but thinking about it, it makes sense as everyone has copies of what was said and it allows Swytch’s representatives to operate efficiently. Warranty registration is straight forward and online. The kits work really well, and are much more powerful than I imagined they would be. Simple to operate and do not seem to affect the handling of the bikes. There is on option for a Brompton mount that utilises the Brompton luggage mount, thus removing any weight from the handlebars. However for us this was not an option as we have Brompton bags that cannot be used if the mount is used for the battery. Overall we are very happy with the kits, they blend well into the bike and most importantly, the bikes can be used as normal if the battery goes flat. The biggest difference for myself is that my wife has changed from being a “I want to cycle somewhere flat” or “not that way, there’s a hill” to a “ooh look, there’s another hill, lets try that one!”, cyclist. Priceless!