Here is a Discount Voucher

It will give you tickets for four Friday dances, for £10.

Do take it up if you're a regular, it will reduce the ticket price for you by £20 in total.

Once you've registered and paid through your online bank, you'll be sent the voucher code. 

When you register for the evening, you'll get the discount (it doesn't apply if you just turn up on the evening.)

It is valid for four evening sessions and works up to end of August 2020.