Replace 48T chainring

Hi everyone, I am looking for advice or info on replacing my 48T single chainring on my hybrid city bike. The bike is a Revolution 'Courier'. Revolution were made by The Edinburgh cycling co-op.
The gear system is Shimano Alivio 1x 8 - speed .
I have found a few Shimano (FCM411) 4 arm 48T chainrings online in the UK but due to Brexit, none of the suppliers are shipping to Republic of Ireland , were I live.
Does anyone know how or if , I can obtain a non Shimano brand 48T single chainring for Alivio 8 speed gears?
Any help would be very very welcome!

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