Every review we hold for the London office, from every platform, shown as written. First names only.
★★★★★ 5/5
GoogleWe worked with John at Jarvis Keller while searching for an office in London’s EC1 area, and the experience was exceptional. We initially asked to be kept in mind if anything suitable came up, and 2 months later John reached out with a space that matched perfectly , a level of follow-up you rarely see.
John was professional, attentive, and genuinely great to deal with throughout the process. For anyone looking for property in London, Jarvis Keller comes highly recommended.
Sultan · 16 December 2025
★★★★★ 5/5
GoogleJohn from Jarvis Keller has been outstanding throughout our lease process. His professionalism, knowledge, and ongoing support even after completion. He have been exceptional. He assisted with business rates and connected us with a reliable planning consultant. Having run a business for over a decade, I can confidently say John is the best agent I’ve worked with. Highly recommended.
Opulence · 16 November 2025
★★★★★ 5/5
GoogleWe used Jarvis Keller to let our commercial property in Farringdon. They were brilliant and despite a difficult market, obtained several offers , negotiated the terms expertly and provided a great deal of all round knowledge and assistance. We highly recommend John and his team.
Hai · 16 February 2026
★★★★★ 5/5
GoogleI would definitely recommend John and his agency to anyone looking for a reliable, hardworking partner to navigate the commercial property jungle. He doesn't just find spaces; he sticks with you until the job is done.
เอกพล · 16 February 2026
★★★★★ 5/5
GoogleAfter working with this agency across three different properties, I can confidently say he is more than just an agent, he’s a true partner. What sets him apart is his unwavering support; he handles every detail of the process, no matter how complex. While he’s a busy man and might be running behind schedule occasionally, he never gives up until the deal is done and the lease is signed. If you want someone who genuinely cares about your success and won't quit on you, this is your guy.
Arpaporn · 16 February 2026
★★★★★ 5/5
GoogleJohn was really helpful. Helped me secure a retail unit that I’m very happy with. Works really fast, listens really well and is very responsive!
Shakib · 16 November 2025
★★★★★ 5/5
GoogleI highly recommend John for his professional service. He is friendly, professional and helpful. I contacted him to find a store. He was always willingly to advise and support with any problems I had.
Thanks you so much!
Thuy · 25 February 2025
★★★★★ 5/5
GoogleRecently listed a commercial property with Jarvis Keller and have been really impressed with the company's professionalism and service quality.
John managed the process brilliantly and coordinated multiple parties involved in the sale, he always kept me up do date on what was going on and next steps to take and was always proactive in suggesting ways to address the problems which inevitably arise in all real estate transactions.
I will definitely recommend John and his agency to anyone needing a reliable and hardworking partner in the commercial property jungle.PositiveResponsiveness, Quality, Professionalism
Valentina · 10 June 2021
★★★★★ 5/5
GoogleJohn supported us with our new lease and was brilliant throughout. He clearly knew the process inside out and offered excellent advice at every stage. His guidance made everything much easier to understand and gave us confidence in our decisions. We really appreciated his professionalism and the genuine support he provided.
Fatma · 16 December 2025
★★★★★ 1/5
GoogleTerrible customer service. I called them five times, but they never called me back. I sent them a text message, but they didn't reply to that either. They replied to my email with rude, one-word answers. Avoid them if you can!
Ádám · 16 December 2025
★★★★★ 5/5
GoogleWe had the pleasure of working with John at Jarvis Keller for our new showroom in the premium EC1 area of London. When we first reached out, we weren’t in a rush and simply asked to be notified if something suitable came up. Six months …
Darrell · 16 October 2025
★★★★★ 5/5
GoogleJohn is extremely professional in his job and he put a lot of effort on helping me and my business partner in renting our first business premises as much as he could. We feel so lucky that we found our studio through him and we highly recommend his company!
Alesia · 10 June 2023
★★★★★ 1/5
GoogleI enquired about a commercial property through the agent John and found the communication extremely poor and unprofessional. After expressing genuine interest and submitting an offer, I received no response for over a week despite follow-up …
Cheung · 16 November 2025
★★★★★ 1/5
GoogleReally disappointed with the service from this agency. Booked in a viewing today and the agent didn’t show up, had to call him and was told he was under 10mins away. We waited 20mins in the cold, called a few times and he stopped picking up. Eventually, called back asking if we still wanted a viewing, was unapologetic for being late and didn’t seem to care at all. He was also super short on email and wouldn’t answer my questions- had to chase up with emails to ensure the viewing was booked. Total waste of time and really unhelpful.
Belinda · 10 June 2023
★★★★★ 5/5
GoogleI would like to express my sincere gratitude to John, for his outstanding work and support throughout the process of leasing our first commercial property. John has provided assistance at every stage, from the initial consultation to the …
Ivan · 16 April 2025
★★★★★ 5/5
GoogleOutstanding service and brilliant communication. John helped me rent my cupcake shop at 24A Wentworth Street and his service is absolutely marvellous. He's been extremely helpful from the beginning of the process until the day I received my …
Sanji · 16 April 2025
★★★★★ 1/5
GoogleUnprofessional and rude. Asked for a property reply is: under offer and shuts the phone on my face.
Friendly · 16 November 2025
★★★★★ 5/5
GoogleThese days it is rare to come across an operation that gives you the feeling that you are the client and that you matter.
Jarvis Keller Stevens are that operation.
John Keller helped us pull off an excellent , complex transaction. He was knowledgeable, experienced and genuinely interested in going the extra mile for us. His intelligent but pragmatic approach enabled him to go the extra mile, and every detail was thought of. He always picks up the phone, and you are never made to feel a nuisance for your concerns.
We were so impressed and would recommend Jarvis Keller for any commercial transaction .
We’ll done , keep up the good work !
A and M CasulliPositiveResponsiveness, Quality, Professionalism, Value
Cafe · 10 June 2022
★★★★★ 5/5
GoogleMy experience of JKS has been excellent. John is one of the most clever agents I have come across. He is very thorough, diligent, creative and a brilliant negotiator. I would definitely recommend them.
Anna · 11 June 2019
★★★★★ 5/5
GoogleJohn let us our new premises in Farringdon.
He was excellent, extremely knowledgable and helpful. Even now, he continues to …
UK · 16 April 2025
★★★★★ 5/5
GoogleJohn has recently helped us purchase our first commercial premises. He was exceptionally helpful and went above and beyond for us and our purchase. We are very new to this process and he was exceptionally knowledgeable and professional and offered us lots of time, effort and guidance throughout the purchase. He worked very hard to help get the deal done. I would not hesitate to purchase or sell from John again at Jarvis Keller Stephens.
Sinead · 10 June 2020
★★★★★ 1/5
Googleworst company ever, tried calling/been to the office a couple of times and still no response.
Kishor · 12 April 2025
★★★★★ 1/5
GoogleNo etiquette on the phone, rude and no interest in a potential client. I really can't make sense of all the good reviews.
Sunday · 21 October 2024
★★★★★ 1/5
Googlecalled 100 times straight voicemail. you would think they wasnt trying to sell properties... very weird
Tommy · 27 January 2025
Where the same review appears twice we show it once. We leave out reviews that name another agent or another of the brand's offices.