I bought a Swytch Brompton Pro Kit in November 2021 for £779. The kit was delivered in Dec 2021 and assembled by a mechanic at a bike shop who had experience with the kits to ensure everything was adequately done. Assembling it is not as straight forward as advertised. The warranty was activated after in mid-January and two weeks’ latter I had the first issue where the kit stopped working all together, leading to a few weeks of back and forth email from costumer support, troubleshooting and a first controller replacement. 4 months’ latter, in June, I reported an issue with the battery pack millage range. The Brompton Pro Kit advertised a range of 50km however it consistently delivered 30 to 35km for a full charge on a mostly flat daily commute in London (tested with GPS tracking several times). A couple more weeks of email exchange with Swytch which identified the issue as being related with the controller, once again, and send a 2nd replacement. That solved the issue at the time. I have never experienced a smooth ride and there was always some jerking (turbulent ride) which Swytch support never managed to sort out although at some point there was a query about the weight put on the bike (my weight is 65kg). Eventually I "learned" to live with this by reducing the speed and pedaling slowly. In February 2023, 7-months after the motor started to stop intermittently mid-ride and the battery turned off without any particular reason. I reported the issue, and during March and April went back and forth with emails, multiple troubleshooting and cleaning of parts, which resolved the problem for a couple of weeks. However in the first week of May the kit just stopped working all together. It has been 2-months of back and forth communication, several troubleshooting steps, several parts replaced including the handlebar bracket and the battery bag but nothing changed, the kit is just not working. The final outcome was that a new controller would be required, the 3rd since I bought the kit, however Swytch are no longer keeps them in stock so the alternative is to sell me a discounted Pro Power pack?! As if £779 for the kit, multiple faults in what probably was a faulty original package, and several months of unused kit weren’t enough. I have tried to request a refund and return the parks however in case you aren’t aware there is a 14-day period to test and return the kit, after which there is no possibility of returning a kit. The argument from Swytch is that the warranty has expired, not taking into account the several issues and periods where the kit didn't work, and they have send several parts, hence nothing else to be done. Overall an expensive kit, even with the presumably 50% discount from pre-order, that doesn’t deliver what it promises in quality, a technical support that takes too long to reply, a customer service that isn’t fit for purpose and nonexistent formal complaint system. In the absence of a formal escalation process for complaining with Swytch I have contacted the citizens advise for guidance on proceeding with a formal complaint. My suggestion is avoid Swytch altogether.