The future of the MIU is officially 'under review' as part of the Right First Time programme.
The current situation is that, by all accounts, the Sheffield Teaching Hospitals Trust would like to have all their emergency services based at the Northern General Hospital where the A&E Unit is currently being redeveloped. Both the Local Involvement Network (soon to be replaced by Healthwatch) and SSONHS are on the record as saying we expect any proposal for the MIU at the Hallamshire to be closed should be subject to consultation as it would leave people in the South and East of the city, not to mention the centre, very much at disadvantage.
Update 23 June 2013
Nick Clegg has now sent us extracts from the reply he received from Sheffield CCG about the MIU. For the first time we have confirmation that in 2011 NHS Sheffield resolved to close the MIU and to reprovide the walk-in service at Broad Lane. The CCG now says that it has no plans to decommission the MIU and any decision to do so would be taken on clinical grounds and in conjunction with the Sheffield Health Community.
As A&E attendances nationally continue to rise, NHS England has set up a review and consultation about urgent care. Some details are available at http://www.england.nhs.uk/wp-content/uploads/2013/06/uec-emerg-princ.pdf. It's a bit hard going and is not patient friendly though it tries to be. Nor does it have anything to say about separate treatment for minor injuries. The CCG may revisit its position after publication of the review.
People who have had good experience of the type of service provided at the MIU should respond through the consultation if possible. https://www.engage.england.nhs.uk/survey/urgent-emerging-care