The article misses the point.
Yes, fine, jobs overseas and all that, but even from the environmental angle, this is a Bad Thing.
Discouraging UK data centres encourages individual server rooms for people who want to keep their data close at hand.
The mistake here is thinking of data centres in terms of "one site" or "one company". The data centre is an centralisation, often outsourced, to prevent the need for chillers, extractors, air filtration, back up generators, lighting, on-site security etc etc etc in multiple locations. Consolidation and virtualisation reduces the total number of servers. And that's before we've even looked at virtual desktops and the massive carbon savings involved in switching to solid-state dumb terminals.
Attacking the legislation as sending jobs overseas is all well and good, but surely it's better to undermine the environmental case used to justify it.
Data centres cut carbon emissions, so should be rewarded, not penalised, for their density.