Update: FACT reader Luk Man Hon of record store Vinyl Pimp may have the answer, in terms of getting a refund:
“When a firm goes into administration, they look at how much money is left to pay off creditors, including ticket holders. If your money is still in the Bloc / Crowdsurge merchant bank (who accepted the payment online), then you should be able to get a full refund before it reaches their business bank.
“Basically, my advice is not to wait, call your bank immediately and initial a chargeback on the purchase. Your bank might tell you to wait 15 days for the company to refund, just refuse outright, telling them that Baselogic is attempting to refund all tickets, and you believe they don’t have the funds to do so.
“Just spoke with my bank, I am due to get my money back tonight. I asked for a chargeback on Monday.”