TfL sometimes struggle to get the media to notice a good press launch, but I got lucky yesterday and stumbled upon their latest project at Waterloo station while travelling home from riding a duff bus. I knew something was up when I noticed an art workshop at the top of the Jubilee line escalators and a stash of luxurious-looking leaflets in the rack by the ticket machines. And I confirmed my suspicions at the foot of the escalators when I walked straight into a full-on bash celebrating the launch of the latest Art on the Underground project. Imagine there are a couple of dozen leaflet-clutchers milling around to the left of this swirly songbird artwork, all looking important and admiring their handiwork, because there were and I've cropped them out. Go Find Miracles by Rory Pilgrim, a new sound installation that'll be played out along the moving walkway at Waterloo station for the next couple of weeks. It was inspired by something unexpectedly tangential - the connections between London's architecture and the Isle of Portland - and combines choral music and spoken word in a looping ten minute presentation. Recording took place at two underground locations, one the disused Jubilee line platforms at Charing Cross and the other a Portland stone mine, with singers including alumni of the Prison Choir Project and following a creative workshop at a feminist library. There are so many surprising layers to this project that you'll only fully unpick them if you read the dense text on the Art On The Underground page or pick up a leaflet, which hardly anyone passing through will. It is a top-quality leaflet on posh paper in six-part gatefold which opens out to reveal a colourful songbird poster, this because Art on the Underground still has a proper budget. a photo but the passageway remains lined by dozens of distracting adverts for alibaba.com, not swirly songbirds, because marketing always trumps art. My passage was accompanied by forceful poetry with a musical soundscape, also a whole new crowd of arty guests who looked like they might have contributed to the project. But just as I was getting into the sequence of call and response a male voice interrupted with a long announcement about CCTV, looking after your belongings and ended with See It Say It Sorted, which is about as far from poetry as you can get. By the time the philistine intrusion ended we'd skipped 20 seconds of the sound installation, because health and safety always trumps art, and nobody's ever going to hear the full 10 minutes anyway. Soundcloud without fear of interruption, but Rory and TfL would rather you came and heard it for yourself this week and next, 10am to 5pm only, along an ad-strewn travelator. It's enchanting but if it causes one single traveller to go beneath the surface to imagine new structures of repair and possibility, or to muse on breaking cycles of harm to find space for miracles, it'll be a miracle.

45 45 Squared 25) MARKET SQUARE, N9 Borough of Enfield, 70m×50m Market Square in Edmonton. New not old, enclosed not open, basic not aspirational, blouses not yogawear, also you can't drive a vehicle into it which I think is a first in this year-long series. Come with me to the heart of Edmonton Green Shopping Centre, N9's sinuous concrete stripmall. fairly typical town centre until the late 1960s when the newly-formed Enfield council decided to bulldoze the majority in favour of full-on retail redevelopment. Frederick Gibberd & Co (of Harlow fame) came up with an innovative brutalist concoction mixing tower blocks with shopping opportunities and car parks, while Edmonton Green was substantially remodelled for through traffic. A new bus station replaced the old marketplace and all the stalls were moved into a large covered square at the core of the new development. North Mall bears off from one corner, South Mall from the opposite corner and a lowlit connector to the outside world from one side, all feeding shoppers into Market Square. Five parallel bands of glass let the light in. The original stalls are long gone, replaced by brighter permanent units with standard fascias. Some are small with space for key-cutting, engraving or a nail bar, a few are substantially larger and the majority appropriate for medium-sized traders in luggage, Caribbean groceries or dried nuts. The three prime corner units are all occupied by greengrocers, such is the demand for low-priced fruit and veg hereabouts, all neatly arrayed in bands of red, orange and green across hundreds of plastic bowls. Why walk all the way to Asda or Lidl when Letherbarrow's has all the loose tomatoes, peppers and grapes any family could need? Then there's Crystal Meats who are from the shrinkwrapped tray school of butchery, any three for £10, also Fashion Express who sell those huge checked bags ideal for taking washing to the launderette. It's all impressively tidy. outer edge of the square, the remaining beacons including JD Sports and William Hill, although the draw was considerably higher when Superdrug was still a Tesco. As for the Railway Tavern this claims to be a traditional pub, and indeed the original did stand by the level crossing on the Green for years, but this glum replacement has all the character of a dingy unit in the corner of a postwar market. Oh and there's also an upstairs, assuming you can get there. For some impractical reason it's only accessible up a single tissue-strewn staircase, or an adjacent lift, so first floor businesses must suffer terribly from low footfall. That said if you want the Turkish accountants, the special needs theatre or the local MP's office, you're more likely to be on a mission than just ambling by. What's unexpected is that after you've walked round the balcony a separate passage heads out onto the open roof... and into a street in the sky. A lot of councils tried mall-top living in the 70s, notably in Wood Green, but it's still surprising to see a row of eight townhouses on top of Clarks and Cardfactory, complete with washing hanging on the line and a lady sipping coffee in her front garden. My initial conclusion was that Edmonton Green Shopping Centre was a postwar success, still very well used and with a minimum of empty units. Then I remembered that there is essentially nowhere else for Edmonton's shoppers to go, the exterior retail offering having been so comprehensively extinguished, so of course tumbleweed has been held at bay. At least Market Square itself remains a cut above what most towns of this size offer, still appealingly blessed with everyday essentials, so long as you don't look round the edge or go upstairs.

Yesterday Ofcom agreed to Royal Mail's request to deliver 2nd class mail slower and on fewer days. Great, said Royal Mail, we'll start doing just that from 28th July. You'll either have to post your letters and cards earlier or shrug and put up with it. a) Saturdays will be excluded The Saturday thing This means if you want a letter to arrive by Saturday, you'll have to readjust your posting date so it arrives by Friday. For example if someone you know has a birthday on Saturday 26th July, posting it three days before on Wednesday July 23rd should be adequate. But if someone you know has a birthday on Saturday 2nd August, it'll need to go in the box a day earlier on Tuesday 29th July. change won't affect letters posted on Sundays, Mondays and Tuesdays because these should continue to arrive before Saturday. But it will affect letters posted on Wednesdays, Thursdays, Fridays and Saturdays, all of which should arrive later because Saturday's no longer a "working day". do still have to be collected on Saturdays and Royal Mail doesn't know which is which until they've been collected. However although 1st class letters will continue to enter the sorting process immediately, 2nd class letters can now be set aside on Saturday and sorted on Monday. The alternate weekdays thing Here's their graphic. Effectively Royal Mail will split their delivery routes into two halves, A and B. On any particular day only one or the other will get 2nd class deliveries. This means only half the staff will be needed, hence considerable savings. Previously you'd never go more than two days without a potential 2nd class delivery. Now you might go four days without one, with either Friday-Sunday or Saturday-Monday skipped each week. Also the A/B pattern won't always be rigidly stuck to. In weeks with a Bank Holiday Monday the same delivery pattern as last week will apply, so Week 1 will be followed by Week 1 or Week 2 by Week 2. It means the usual gap of '2 working days' will still apply, even if in reality that means no 2nd class post from Thursday to Tuesday or from Friday to Wednesday. The eased target thing At present Royal Mail have three potential days to deliver 2nd class mail and still hit their target. In the future they may have two potential delivery days or they may have just one, depending on which Week it is. For example a 2nd class letter posted on Monday could currently be delivered on Tuesday, Wednesday or Thursday. In future the delivery window will either be Tuesday/Thursday or just Wednesday, which doesn't leave Royal Mail much room for error. 1st class targets are also being changed. Currently 93% should be delivered the next day and this is being reduced to 90%. Ofcom argues this should aid efficiencies and is still higher than comparable European countries. Again there's a new 'tail' target, specifically that 99% of 1st class mail be delivered in three days.  within 1 daywithin 3 dayswithin 5 days 1st class90% (was 93%)99% (new)  2nd class 95% (was 98.5%)99% (new) An example A few other snippets from the Ofcom consultation In summary Ofcom wants you to know two things... ✉ Unless there are 1st class or other priority letter or parcels for you, you will not receive letter deliveries on Saturday. ✉ Any 2nd class letters posted on Wednesday to Saturday may arrive a day later than now (excluding Sunday).