They are all like that in London.
We had to get Pimlico plumbers out when we moved in here. They charge more or less £1k for a full day’s work. On the other hand, when they did come they arrived on time (to the second), and worked systematically and continuously without any messing about.
The landlord had previously tried to get the letting agency’s nominated plumber to do the work. They didn’t charge Pimlico rates, but still the thick end of £100 per hour, but did absolutely nothing during the course of 3 visits other to than to “assess” the job, which mainly entailed saying “oh, all that would have to come out” and “you could be looking at a big job here”. That advice cost hundreds.
Last week we had a washing machine guy out to confirm what I had told the landlord - that the bearings had gone in the washing machine. £94 for 5 minutes, and I think he could have got the job done in 30 seconds. Conclusion: bearings gone.
To be fair, if the machine had been repairable, he’d have done it for the same cost as he does >90% of his jobs in less than an hour.