First time buying a property here, had a little weird experience.

Recently was looking to buy a property and found one that I liked, so I contacted a property agent who could serve as an intermediary. But they got back to me and said that a viewing was "refused because they wanted to find a buyer by themselves". A bit confused, I asked him why and he told me that some property agents try to get double commissions from both buyer and seller and it was illegal, but nothing he could do.

So I tried to contact them myself and they got back to me and asked when I was available for a viewing.

Is there anything I should be cautious about when dealing with a potentially suspicious agent? Or am I just being paranoid.

Also, this company has a registered number and so and so, so it's legit.

(Idk what to tag this under outside of Housing)