You will be lucky to find any availability for this year. I have been booked for 2016 halfway through last year. There is a very big demand for stalking in the UK and people need to book well in advance, a year with most people.
I wish you luck but as I think you might be an agent you will need to tell clients to book really early in future. If you want to PM me I have openings in 2017, but I have interest already.
Regards
Sikamalc