To enquire about availability the best thing to do is contact the relevant store you would like to visit, you can do this via phone or email, and they will be able to advise you regarding availability.
You can also view the schedule for both events online.
Icing lessons & Icing Lates: https://www.eventbrite.co.uk/o/biscuiteers-15819888433
DIY Icing: https://www.biscuiteers.com/boutique-icing-cafe/biscuiteers-icing-cafe