A few updates, as this thread needs 'em:
Ashton Under Lyne
Topaz Café in Ashton is currently open 10-4 Mon to Thurs (plus 10-3 on Fri) and plans to open Saturdays from March. Lots of vegan options, though they aren't marked on the menu and you have to ask. Very good quality of food for the price (e.g. my side salad for my tortilla contained a mix of leaves, olives, seeds, cucumber, tomato, avocado and a really tasty dressing). However, some of the serving staff are mental health service users who are in rehabilitation, so they may not get your order absolutely bang-on and I recommend speaking to one of the chefs if you are requesting any amendments to anything on the menu. Don't expect shit-hot, fast service, but it's friendly and there's free computers/internet to use while you wait.
Lily's has expanded the menu and now sells vegan omelettes and a wider range of curries. The top row of sweets in the counter are also vegan. sadly their drinks menu is still dire, with only fizzy pop and no fruit juice of any description.
The Park Cafe in Hyde (nr Flowery Field train station) has a few basic veggie options on the menu, but the chef is very vegan-aware and eager to include people, so if you phone in advance to request vegan options, she'll make things like chocolate cake, ginger parkin, tomato and walnut pate and tofutti cheese wraps. The food is excellent and dirt-cheap as it is a social enterprise.
The little tea and cake place with vegan cupcakes in Afflecks Palace closed down and the new owners told me they have no plans to introduce vegan cakes as there is "no demand". The place was empty at 1pm on a Friday, so perhaps they won't last long.
The local Parsnipship stallholder, Ian, is no longer operating as a Parsnipship franchise, but as Shakahara foods. He sells a lovely cashew-based vegan cheese.
I checked out The Bakerie and was very unimpressed. Not as vegan-friendly as people are making out.
Ditto Soup Kitchen in the Northern Quarter, who have one vegan option.
Martin the Mod is back at the Thirsty Scholar, but food was only served 12-3pm at the time I went. If he extends the serving hours I'll post it here.
The Lass O'Gowrie pub on Charles St has "Meat Free Mondays" with loads of vegan options. I haven't yet checked it out, as I'm never in Manchester on a Monday. Their normal (Tuesday to Sunday) menu isn't very vegan-friendly, but perhaps that will change.
1847 has a menu that's over half vegan and it has been consistently brilliant every time I've been, however I have heard mixed reports from other people. I think it depends on whether the head chef is working that night, as the place is painfully under-staffed.
The Cornerhouse has a vegan pizza with roast potatoes and basil oil on it. I tried it and really liked it.
A group of people plan to open a social centre with vegan food somewhere in the city, but their project is in its early stages.