That one is not CC/CV either. You can tell if its CC/CV if it has two meters (current and voltage) and two adjustment knobs, one for current and a separate one for voltage. Some CC/CV will have two knobs for each function.
I searched Ebay UK. Item # 3836936467 is a 2.5A 25V CC/CV supply, 6.5 Pounds Sterling. I'd prefer a larger one (more current) but it would do for this size work.
Item #3836743025 is a 3A 30V CC/CV unit. 16 Pounds Sterling, and I think its new. Again, a larger one would be better.
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