Well, the article linked to says:
The Ministry of Defence has chartered aircraft to move millitary (sic) personnel between Kabul and Birmingham International Airport.
So - it's a wet charter of airline airframes. Which makes sense as Kabul is an international airport, currently served by Fly Dubai and Turkish Airlines, amongst others, not some rough desert strip in the bondu!
Its unlikely that any of the transport fleet, apart from aging Hercs, that were run into the ground, would have been able to deal reliably with the conditions.
Would the composite/ally airframes, with the different coefficient of expansion of those materials, cope as well with the huge temperature differences experienced night/day on dispersal and from ground to altitude, let alone the electronics and air con