Hi there, sorry for the delay, only just found the Community!
We were using a high street letting agent. We used them for two tenancies. For the first one they were OK, the tenant stayed 18 months and always paid his rent. Then he went to prison and the agency were very helpful in ending the tenancy and finding us a new tenant. Then the agency changed hands and the new staff were useless. When the second tenant wanted to end the tenancy before the six months (something we were willing to do), the agency staff were no help at all, they did not seem to know what they were doing. We had to find out what to do ourselves to end the tenancy legally and retain some of the deposit for damage she had caused. So we decided to ‘do it ourselves’ and whilst researching how to do this came across Openrent. This seemed ideal for us so we signed up and indeed have been extremely satisfied with the service. Hope this helps!
ETA : The tenant we got via OpenRent has been excellent, rent paid without fail