I still think in around 12 months or so the place probably won't be open
I can't understand how someone could logically come to this conclusion.
There is some possibility I'm biased as in 2023 I went to Sheridans more often than Piccadilly, Roses, Temptations, La Maison, GFE, The Georgian, Infinity and Baileys combined together. This might not be visible from my reviews, because you tend to do one review whether you see a WG once or ten times. But, I feel it is obvious from my own reviews that I am a punter who looks for value in his punts, so that stat should tell you my thoughts on which parlour offered the best value in 2023. In 2021 my trips to Sheridans beat the next 11 parlours combined. In 2022 they narrowly lost to the same 8 parlours from 2023 combined, but really that was 1 WG at 1 parlour carrying the rest.
I can't get my head around the 45 minute pricing and the 60 mins as well.
30 Mins £50 (£20 Desk & £30 to Lady in Room) = £25 per 15 mins
45 Mins £60 (£20 Desk & £40 to Lady in Room) = £20 per 15 mins
60 Mins £80 (£20 Desk & £60 to Lady in Room) = £20 per 15 mins
Surely the girls prefer 30 mins as they'll make more money, especially if extras are only paid for once in a booking 
If Iloveoral thought the 30 minute price was good he must be salivating at the the 60 minute price. A solid £20 less than Roses, Temptations, GFE, The Georgian, Infinity and Baileys, £30 less than LMB and either £10 more or the same as Piccadilly depending on your choice of room. Everywhere charges roughly the same extras now, with The Georgian standing out for being a bit more expensive charging for FK and Piccadilly WGs usually charging for FK if they are even willing to do FK.
The parlour itself is the one losing out on money for the longer bookings. The WGs get £1 per minute at both 30 and 60 minutes and £0.89 at 45 minutes. Factor in OWO and it goes to £1.33 / £1.11 / £1.17 for the WG. My theory is it should over time attract punters who like longer bookings. The most successful WGs in the parlour will be good at longer bookings. So you'll get more WGs with that style, more punters who like that style, more WGs with that style, etc. The WGs I have spoken to about it, do tend to like their regular punters who book for longer sessions, steady reliable consistent if slightly lower income.