Cheers Nigel, yes agree, it does sound like a scam. They offer £40ph for guys and £150ph for women so probably standard price. Just want to see how the conversation goes and if they go about asking for the money. Paying nothing upfront. To be fair, quite a decent effort on the webpage.
It is almost certain it is a scam using ancient method. But you will not know this unless you want to face the sword first and see what happen. As other have said, you have a lot to loose e.g the pictures could be used to blackmail you, sold to other websites without your knowledge and you get nothing in return. Also they might ask for free shagging in the next step and the iteration will start again like photo shooting, e.g advance fee, free shagging, etc.
Taking such considerate risk will only worthy if the chance of getting future gain is quite high and / or the gain is extremely huge. That is as I understand most of the photo models are doing in their early career.
What future gain you will get by relying into this porn shooting compared to go to well known porn production house .
These scam motive has been known for ages it is called "advanced fee and/or Up-front payment" ..
I never heard any credible porn production house ask for Up-front payment. The most they will ask is free shagging and/or shooting.
Why do you want to stick to this unknown porn shooting, why not stick to the well known porn production house which produce porn movie, pictures regularly ??
For experience, there are reasonable number of swingers clubs available. Few of swingers clubs, night club will do shooting occasionally where people especially the girls could get paid ...
Whatever you decide please keep the forum inform as this is a good example to learn ...