Hi again. I've just noticed your reply, sorry for that. I completely forgot about this topic...
Not sure if you still need this service, but even if this is something that you could be interested of in the future, please get in touch. Waterless...?
It's a new technology that is working very well. I will paste some links here so you can see some before/after photos and a short video as well. How much?
It really depends on the service you need. If I would judge by your comments, you need a deep clean. On my website you can find a very good detailed price list. How long it takes?
It depends on how dirty your vehicle it is and the type of service you require, but a very good deep clean, especially bright colour leather it can be anything between 2-4 hours.
Here you can find info: http://www.ecotypecarwash.co.uk
Please see pictures here: https://www.facebook.com/EcoTypeCarWash/
Or see pictures on our Instagram: eco_type_carwash
PS: Sorry for the very late response, if you contact me please quote "Nappy Valley" to benefit from a 10% off.