Click here for the UK list of shortage occupations.
No mention of IT workers there ...... better get practising your sheep shearing skills!
The point is this. If someone is qualified to come in under Tier 1, it does not matter which skills they possess, but if not Tier 1 qualified, the UK is now insisting that the UK does have a shortage in a particular sort of job.
Interesting how they are going about this. For example, "care worker" is not OK, but "senior care worker" is OK, but a "senior care worker" needs to be paid at least £8.80 per hour. Not a fortune, but noticeably more than a "care worker" would be paid.