Replacing my DUALIT power adapter (SA110C-12BS-I?

Hi, my DUALIT DAB Radio's (model no. DLR-1) adapter has stopped working. I've established that the radio works, using rechargeable batteries, but when I connect the adapter, without the batteries the radio does work.

The rechargeable batteries also don't get charged once in the radio with the adapter connected.

Do you know where I can get an equivalent power adapter? The adapter's model number and spec are: SA110C-12BS-I, 12V INPUT- 100-240V, 50-60Hz 0.3A, OUTPUT 1A 12W & the SKU is 71010