In my opinion, I think the best time to buy was between 6 and 12 months ago! This was when it was a buyer's market and they could get a deal. The uncertainty of Brexit was making people wait and it stalled the market. People desperate to sell would have been more likely to accept offers we there was hardly any buyers about.
So many people have waited to see what happened after brexit and when that turned into the pandemic people couldn't keep waiting forever to buy. The stamp duty cut has got most sellers and buyers on the market so now it's a seller's market. So you kind of missed the boat.
I don't know if there is going to be a crash, but if there is, then there probably won't be many houses on the market. All the people that have been waiting for a right time to list their property are doing it now for sure.
Obviously if people start losing their jobs then this could mean a lot of houses could get re-posessed and go on the market that way...
I think tho the government will keep trying to protect home owners as they won't want a property crash (hence the reduction of stamp duty). So might offer more mortgage breaks etc. Really they shouldn't have offered these mortgage breaks to people that haven't lost their jobs. Should have only offered for those that were made redundant etc.
Honestly, as you are paying for rent when you could be rent free... You are losing money each month. I would get looking now. You are still in a great position with that massive capital. Sellers will be very keen for you to buy their homes! So go for it! If you wanted to wait you might have to wait a few years and that's not even guaranteed that there will be a crash in prices. This will push prices up if anything.