Nothing else is affected, the same performance will be applied!
The cyber attack isn't an excuse, thats real enough, obviously when they sold Royal Mail, they didn't want all the costs of overheads in staff as that seriously affects your shareholder profits, so they got rid of a lot of them all and farmed their IT department out to the lowest bidder. i would imagine (having been there) they are still on the phone to an office in India saying 'no CYBER attack.. yes the backups.. where did you put the backups..'