A lot of great advice here. At the moment, it is what is called a “hot market” (especially, but not just, in the south east).
We moved last year, just after lockdown and in 6 weeks from offer to moving in). Three in our chain and we were all serious about moving. Your appointed agent should be checking the status of buyers, eg if they have a house for sale, is it under offer and if so, who is the agent (so they can follow it up). There are so many buyers out there, many so-called cash, and way too many for the house stock available. So many agents are just not bothering right now with unsubstantiated buyers. Friends of ours sold their house last year and moved into rented. They have been slow off the mark trying to find the “perfect property” and missed out over and over again because they were not quick enough to put in their offer. They saw a house they liked yesterday morning. It went on Rightmove at 10am and went under offer ten minutes later….
That said, a lot of agents approximate that one in three sales falls through.
At the current time, there can be several thousand buyers in the agents’ books all going for 40 or 50 houses. That’s why agents aren’t bothering to call up suitable prospective buyers on their books - they are having no trouble selling at the moment AT ALL. The market is very very much in favour on sellers at the moment. A while ago, the suggestion above to agree to only a month’s initial sole contract would not have been accepted by most agents - now they are so desperate, they’d probably accept any conditions from a seller.
Insist on the agents doing all the viewings, and yes, an open day is a great way to sell a house (and I hate to say it, even start a bidding war!!). You should be in a very good position right now. Less so, if you’re trying to buy something else!!