I've been brewing bitter and stout in England for a good number of years off and on. I have never used torrefied wheat, just pale malt and roasted grains or roasted malts for colour. I am a bit puzzled that it is supposed to be a typical ingredient of traditional English Ale. Sure, it may give a pint of beer a bigger head, but that is not what English ale is generally about, at least in the south half of the country. A big sudsy head is not at all normal for any local draught ales I've tasted and that is from a large number of different pubs and breweries in South East England. In fact, if an ale has a noticeable head, I would suspect it to be one of those awful smooth cream ales (like Caffrey's et al or indeed Guinness itself, which are gassed partly with nitrogen to make the head build up and stay longer). My local pub near where I live in East Anglia has Adnams Ales, Adnam's being a very old established and traditional brewery situated in Southwold, Suffolk on the East coast of East Anglia. None of their beers contains any torrefied wheat either. I supply a link to the make up their beers:
http://soundsunique.co.uk/images/brewing/AdnamsBrewIngredients.jpg
Their regular bitter contains only a base malt called "tipple" plus a little caramel for colour, plus hops. To my mind, a typical English draught bitter ale should have plenty of "condition", with the yeast working slowly to give the beer life, and if you gently disturb the beer glass there should be lots of little bubbles seen at the surface, but none rising through the beer. There is often no more than a thin and incomplete head on the beer to be seen,
In the North of England it is normal to see more of a head on the draught bitters, and the beer taps are designed to stir up as much head as possible....maybe these are the ones that also contain more in the way of torrefied wheat. The people in the north of England often complain about the beer in the south not having enough head. I honestly have not looked into it before but as a South Easterner, I am suspicious of a big head on draught bitter!
I generally brew bottled ale and stout myself, so that I can drink it over a period of time without feeling rushed. For bottle conditioned ale a bit more of a head might be a good thing, so I might gived the torrefied, horrified, petrified, traumatised, terrified stuff a go in my next brew. Keep it out of my pub draught ale though please!