521 libraries (461 buildings and 60 mobiles) currently under threat or recently closed (List below) out of 4517 in the UK (CILIP figures)
Local News – all news is representative and not comprehensive
Blackburn with Darwen – Josephine Cox speaks against library cuts – Lancashire Telegraph
Brent – Lobby Brent Council – Save Kensal Rise Library 
Manchester – Bishop of Manchester blasts government cuts – Manchester Evening News “
“It is just not right to cut spending here more than in wealthier areas. Manchester, with its very real problems, is proportionately worse off. It is completely lacking in compassion.”
British undergrads  face more than £11m in library fines – Times (paywalled) 
From a member of CILIP – Good Library Blog
Liverpool to bear brunt of cuts – Guardian [wrongly describes libraries as “discretionary”]
List of cuts by authority (click on name of authority for link to relevant report)
NB. From 2012, the MLA will be abolished – the Arts Council will take over its role for libraries with a budget of £3m rather than £13mThe Book Trust has also had its funding halved (from £13m 2010 to £6m in 2012). Therefore, libraries start 2012 with more than £10m less, regardless of any further cuts. There are 151 authorities in England, 206 in the UK.
Aberdeen – 8 (out of 16)
Aberdeenshire – some, (brief mention here seems to suggest all but this very unlikely)
Angus – 4 libraries closed this year (April) to be possibly replaced by a mobile.  More info here
Argyll and Bute – 3 libraries and mobile library.
Barnet – some – public consultation here
Barnsley – 3
Bedfordshire – 1 mobile to go
Bexley – 3 and 1 mobile (3 from a list of 5 will go, plus one mobile) (this is the five) (£1m – 16% cut) (merge with Bromley?) (5 could be unpaid)
Birmingham – 39 (three libraries lose hours so Tower Hill can remain open) (school library service to close)(all branch libraries under review, £200m super library being built)
Blackburn with Darwen – 1 mobile (reduced opening hours) cut, opening hours reduced, bookfund cut.
Blackpool – 2
Bolton9 (out of 15)(£400 to £500k)
Bradford – 5 (Confirmed 5 to close – £70k)
Bridgend 3 (may not be able to reach Welsh Assembly library standard) (opening hour cuts at most)
Bromley (link is on page 7) – 8 (out of 15) (KAB talking books cut)
Buckinghamshire – up to 14 to close or be staffed by volunteers (extra time given to look for volunteers) (this article says 11)(£688k cut)
Bury – 1 (1 other reduced hours) – Manchester Evening News
Caerphilly – (“rationalised”)
Calderdale – Some? (£350k cut inc.12 jobs, £200k stock)
Cambridgeshire13 (36% cut in funding, £445k in 2012£3.2m by 2016, closures down from previously reported 19) (mobile services already “slashed”) (£1.1m cut) (school library service closed)
Camden – several plus one mobile library (£2 million cut)
Cardiff – (no closures, cuts to be considerd on 4/3/11)
Carmarthenshire5 in 2011, 18 in 2012 therefore 23. (improvements in Llanelli and Carmarthen)
Central Bedfordshire – one mobile library to go
Ceredigion – (£1m “relocation” of Aberystwyth, £100k to be spent on Cardigan)
Conwy – 7 (out of 12) (review under way)
Cornwall – 2011 cuts confirmed – (£1.5m cut, 90 hours lost, merge with Registrars/One Stop Shops)
Coventry – (opening hours cut, more fees)
Croydon – Up to 6 (public gets to choose which), (£690k saving)
Cumbria – (review under way, no closures yet, 3 of 6 mobile libraries closed in 2010) 
Darlington – (£250k) off budget
Denbighshire – (Rhyl has reopened after £300,000 refurbishment; no closure or merger plans, although ‘this may be reviewed”)
Derbyshire – (Opening hours to be cut)
Doncaster14 safeguarded for one year (the other 12 are safe) (may also be taken out of council control) (over 50% cut in funding)
Dorset – up to 20 (out of 34) to close or be given to community groups  (£143k off bookfund).  Dorset is the sole council to receive an actual increase in funding for 2010/11. (£800k cut for libraries)(council confirms £800k cut but gives three months extra time for consultation)
Dumfries and Galloway – 7
Dundee – (to transfer to the same trust as swimming pools/basketball)
Durham – some (£1.4m cut)
Essex – 2011 confirmed  (extensive opening hours cuts, 21 jobs to go) (no cuts to mobiles)
Falkirk – (transferred to Trust)
Flintshire – 5 and at least one mobile
Gateshead – some (school library service, music library, AIRS talking newspaper under threat)
Gloucestershire –  confirmed 10 branches and 6 mobiles to close or be run by volunteers. 8 libraries open 12 hours per week rather than previously proposed 3.5 [previously, up to 18 and 6 mobiles  – 10 to close or go to volunteers. 7 to close if they don’t find a partner (43% total cut in funding). (Cinderford saved)(revised proposals here)  A further 11 reduced to 3.5 days a week. 100 library jobs to go say UNISON, 40 FTE to go says council, inc 36 managers cut to 9, 3.5 FTE librarian posts cut (to 10)]
Greenwich1 (could be turned into a Trust) (school library service closed)
Hammersmith and Fulham – 2 (to be run by volunteers) and 1 mobile (record office to have £70k cut from £88k, volunteers, presumably no professional archivists, reduced hours) (£310k cut)
Hampshire – 13 mobiles (58 FTE jobs to go) (and mobile libraries cut within two miles of each branch, this report says 18FTE to go)(libraries merged with IT/property etc) Source of number of mobiles is UNISON Hampshire, No extra overtime or weekend pay
Haringey – (staff cuts)
Harrow – (34 FTE to go)(self-service machines to increase)
Hartlepool 2 (out of 7) to close (another to merge with community centre, all library’s hours cut)
Herefordshire – (new Ledbury Library delayed) (no branches to close but mobile library review)
Hertfordshire5 mobiles (2011 Confirmed – opening hours to be cut by one third – from 2236 hours down to 1575) (mobile libraries cut) – At least one library (Borehamwood)  faces a 40% cut. (£580k cut in first year, £1.4m after) (cuts confirmed) (some mobile stops saved)
Highland – (Wick Library to close and merge with school library) (may move to being in a Trust) (this report says no closures) (suggestion that professional staff are being lost – a source is needed).
Hounslow – initial plan to close 8 cancelled after public consultation, £300k cut in bookfund, some libraries may still be at risk as cuts “postponed”.
Inverclyde – some
Isle of Wight – 5 (out of 11) (£100k offered as temporary extra)
Islington – some (£250k cut)
Kent some (volunteers to be asked to run some) (83 FTE to go as self-service comes in)- Isle of Thanet one of areas hardest hit (School library service closed)
Kingston – (50% adult bookfund cut)
Lambeth4 branches (out of 11) and 2 mobiles (setting up a trust “which will give you a chance to run libraries”)
Lancashire – 2 mobile libaries (plus 16% staffing cut)
Leeds – Up to 20 (out of 52) – council says 20 closures are not about cuts but to make service viable.
Leicestershire – NB This information is under doubt.  I have received a call saying this article relates to Leicester.  Article, though, seems to be indicate it is Leicestershire.  No libraries are down for closure according to his article, although they could all/some be transferred to a trust or privatised (merge of lending/reference- 14 FTE jobs lost).
Leicestershire – (£250k cut in bookfund and hours)
LewishamConfirmed 2011/2 5 (41% cut – £800k)
Liverpoolsome (£500k / 28% may be closures / cuts in opening hours)
Manchester – 5 (plus no libraries open on Friday or Saturday)(£394k cut) (end of homework clubs)
Merthyr Tydfil – some
Milton Keynes – 2 (Feb 2011 – closures delayed for 12 months)
Moray – some – (previously marked as no public libraries closing but council has appealed for volunteer groups to run them, may move to being in a Trust, another article here).
Newcastle – (12 jobs lost, £245k cut) (8 libraries to be semi-staffed “library express”)
Newport – 7 (“No closure plans; considering how to ensure “21st Century provision”)
Norfolk – (£1.5m over 3 yrs proposed cut inc opening hours cut, staffing cut, bookfund cut, less mobile visits)
Northern Ireland – 20 (cut in bookfund, 15 to 25% cut in hours, recruitment freeze, removal of buildings budget (denials up to 30 could close)
Northamptonshire – Up to 8 libraries originally under threat,. Libraries given a reprieve but still apparently under longer term threat. (Cuts to management and support).
Northumberland – some
North Lanarkshire – 1 (closed March 2010)
North Lincolnshire – (£15k opening hour cut, £30k Bookfund cut)
North Norfolk – some (c. £1m reduction)
North Somerset – 1 closed, 2 proposed, volunteers may run libraries. Weston Mercury update
North Yorkshire24 (out of 42) to close or be staffed by volunteers, 9 mobiles to go off road, surviving libraries could have funding cut to share out with any community-run libraries established. (£2.3m cut from £7.5m total)(£650k to keep libraries open a bit more, inc. from bookfund)
Nottingham – 1 (3 libraries to close, 2 new ones to open) (computer use to be charged)(1 library closed)
Plymouth – some – £370k cut 2011 £480k 2012 £620k 2013 – 9 FTE (10%) cut to staffing, reduction to opening hour, increased computer charging, less security.  No closures 2011 but 5 claimed as under threat for future years – Stoke, Southway, Ernesettle, Eggbuckland and West Park
Powys – (cuts, decision in March)
Redbridge – 5 out of 12 may close, another may relocate (£2.3m cut). Goodmayes saved.
Renfrewshire 1 (1 library to move into smaller sites in community centres)
Richmond – 1 (£351k cut) (service may be privatised) Heathfield due to close in March.
Rochdale1 (some library managers to to go in first phase of cuts)
Rutland – (6 libraries to have reduced hours, staff cut)
Salford3 – some libraries to move to sports centres or provide space for community groups (2 to have reduced hours)
Sandwell – some
Sefton – 3 (consultation here) (or is it “just” an opening hours cut?)
Sheffield – (30% cut expected, £2.5m) (no closures, opening hours reduced) (33 FTE, mobile reduction)
Shropshire – 2 and 3 mobiles(reference library to merge with central library)
Somerset –  2011 Confirmed – 11 (out of 34) (£1.35m cut) will be closed/offered to community groups over 2 years. 4 (out of 6) mobile libraries will also go.  25% cut in funding. Full (revised) plans here (20% cut in opening hours). Rethink on mobiles may happen – article here. Public will be asked for “voluntary contributions”.
Southampton – 2 (charges increase)
Southend – some
Southwark – (school libray service closed)
Stoke – 2 and 1 mobile library, (ends RNIB service)
Suffolkconfirmed 2011 £350k this year, 29 (out of 44) to be “divested” 2012/13 – (consultation here, £2m cut)
Sutton – some (£935k off £6m p.a. budget) (school library service to close)
Swansea – some
Thanet – some
Thurrock – Confirmed 2011 £350k cut, staffing reduction (20% cut in hours if work more than 15 hours), all to close on Mondays. 
Tower Hamlets – (staff made to reapply for their own jobs -23 library staff replaced)
Trafford – (mobile library to be staffed by volunteers)
Waltham Forest – some
Wandsworth – 1 (York Gardens – description of council proposals here) mention in Guardian here plus reduction in hours in others. Council papers here.
Warrington – (2011 Confimed)  2 and 1 mobile library confirmed . More info here. Journals stopped also, £25k off staff. £10k off reference.
Warwickshire – 16 (out of 34) (council agenda here, 30%, £2m cut from £7.4m budget over three years) – official report from council here, (£2m already cuts since 2006, staffing already cut by 63 FTE 24%),  special county map of closures here.
West Dunbartonshire – 3 (some staff losses too)
West Sussex Some (5 FTE lost, some librarians pay reduced to library assistant)
Western Isles – (cuts in opening hours by one day per week and during Summer)
Westminster – 1 (St James’s Library to close) (Marylebone may never reopen)
Wigan – Up to 15 out of 17  (£1.1m cut off £4m budget)
Wiltshire – 10 (plus reductions in hours in all but one of the others, more cuts next year) (26 FTE posts have gone in Dec 2010  inc. 9 out of 13 community librarians)(cuts include a £940k library opened Dec 2010)(self-service in all)
Worcestershire – some (Pershore library to move out of town centre) , contact centres may combine with libraries
York – (libraries to be “hit”)

Authorities which have announced there will be no library closures (2011 financial year)
Anglesey – 4 libraries earmarked for closure have apparently been (temporarily) saved. Brighton Barking and Dagenham. Blaenau Gwent, CardiffCheshire West and ChesterCornwall – (90 hours cut, £1.5m cut, one stop shops/Registrars merging into them, book supply being done differently to save money, no guarantee for 2012) (23% cut in library budget, 102 hours p.w. cut). Coventry (but less opening hours, fees to rise). Derby. Devon (may have reduced opening hours, less mobile stops, no new Exeter Library – although this article suggests mobile library service has improved).  BBC article confirms no closures. (“brutal” cuts to Exeter Record Office). Doncaster (14 under threat in 2012) Edinburgh (£550 cut) (pledge to keep open is for the lifetime of the administration). Essex(but other cuts – see list above). Haringey . Harrow (some increase in hours, more self-service but less staff). Gwynedd.   Highland (but other cuts – see list above). Hillingdon.  Hull (number of libraries actually increasing here). Kirklees. Lancashire (but staffing cuts) Leicestershire (but opening hours and bookfund cut – £250k).  Lincolnshire. Medway. Merton – (£118k cut – 2 libraries will have reduced hours but reprieved from threatened closure). Neath Port Talbot  Newcastle. Norfolk – no closures but staffing cut, bookfund cut, opening hours cut, less mobile visits).  North Ayrshire. North Lincolnshire North East Lincolnshire. Nottinghamshire  – no plans to close any branches but massive reductions in opening hours. Oldham Pembrokeshire. Plymouth (opening hours to reduce, managers to go).Plymouth (but major cuts, closures possible 2012/3) Poole. Portsmouth. Rhondda Cynon Taff: Rochdale: Southampton. Staffordshire (free internet access also retained). Sheffield (cuts in opening hours).  Slough (3 new libraries opening here, usage significantly up). Swindon. Torfaen (but one closed April 2010) Tower Hamlets  Trafford – (but mobile library staff will be replaced by volunteers). West Berkshire (£200k cut). Windsor and Maidenhead. Wirral (plus £1 million investment) Wrexham  (libraries increasing)