We're in East London, and put our house on with Yopa at the end of July, had an offer accepted in less than 10 days. We are under contract, don't have a completion date yet but looks like all is going well. We did the premium listing, so the agent handled the showings (there were 2 evenings of showings, a week apart, and all by appointment, and with social distancing/masks etc.) I don't think the high street agencies are worth it quite frankly, they all do the same thing, and as long as you are listed on Rightmove and Zoopla, that's where everybody looks. You need to clear out clutter and have good pics. Good luck!