I agree it's a bit weird, and I would have laughed at it. But then, when viewing flats to rent I saw some pretty horrific things: there was one flat where it was an absolute tip (they were in the process of packing) but ... there were skid marks on the toilet and the place was filthy. Then, there was another flat (again, absolute tip) and the tenant kept on pointing at random bits of their furniture and saying "you can buy it! £10 for the chair, £30 for the bookcase" etc. etc. Didn't take either of those flats, surprisingly.
However, one flat I was living in was a mess for a lot of viewings, because freaking FOXTONS kept on turning up with only five minutes notice. The worst was a Sunday morning, I was happily pottering about in PJs thinking about making breakfast and reading the paper, when lo and behold, two bloody Foxtons agents turned up on my doorstep and said "do you mind going out in about ten minutes? The flat is going to be an open house today". They hadn't bothered to tell me at all, so I went mental at them, and they finally agreed to cancel it. Then there was the time the stupid agent left me an answerphone message saying "I'll be there in five minutes", and I had to physically barricade the door, pointing out it was a religious holiday, and I didn't want Foxtons agents crawling through the apartment. He then told me to stop being unreasonable as he'd told me (five minutes before) that he was coming, and the person wanted to view the flat. I told him to fuck off.