My ad hoc rate is £30 per hour (minimum one hour/month) but I also offer retainer & service packages.
If you would like me to reserve you a guaranteed amount of time each month, I can do this after payment in advance.
Retainers last for one calendar month and any unused hours will be lost at the end of the month, but I will send you a weekly reminder of how many hours have been used and are remaining. If you need any extra hours, these can be added on at my usual hourly rate.