If the Indian variant becomes established here and things turn out as bad as some of the modelling suggests, then Governments that allowed travel to and from India this spring deserve criticism no matter what party they represent surely? However, it appears that Wales and Northern Ireland have different rules to England and Scotland. This piece
https://www.bbc.co.uk/news/uk-56806103
From April talks of there being no direct international flights into Wales and Northern Ireland at that time and as travel into Wales from England was not allowed then I believe, there was an effective ban at that time.
Current rules are set out here;-
https://gov.wales/rules-foreign-trav...-covid-19-html
So, on this subject at least, my reading is that whether you wanted to blame Welsh and Uk Governments equally would be very much down to the individual as it seems Wales could argue that their rules were more stringent.