Maybe, but they didn't all disappear overnight and with horses came stable yards and horse-shit on the road - and you'd still take your life in your hands if you crossed in front of one of them. Maybe we should try and get them back. The saddlers could make handbags for well-heeled LJAGgers, and the blacksmiths make fancy gates and railings - or bespoke kitchen cupboard handles for the same crowd.
As LadyV says, LJ is a light-industrial area with a bias towards the motor industry. Lots of car/taxi repair workshops, car wash services, petrol station etc. You, LJAG and now the council may find them unsightly and not compatible with the transformation of LJ into a cafe society. Closing roads and the "gentrification" of LJ will kill these businesses and force these people to move away.
If that is the intention, then the Council, Network Rail (and LJAG) need to be upfront and clear that this is their vision.
Go slowly, consult properly and compensate where necessary. Bring people with you.
Regarding the comments about handbags and fancy handles ... the car repair workshops near me often have an impressive colection of Rolls Royces, vintage sports cars and the like parked up waiting for attention.
Anyway, I don't want the workshops and light industrial to disappear and be replaced by cafes. They define what the locality is, and they provide employement. I don't spend very much time in cafes myself. I spent a fair bit of time arguing against the Higgs redevelopment for this reason. I want the industrial uses to stay but I also think the public realm at the heart of LJ could be much improved.
I recognise the potential for road alterations to affect these light industral uses. However my belief is that it doesn't need to be an either/or situation, which is what many are presenting it as. The road alterations can be designed in such a way that effects on these businesses are minimised. Ideally we would have the experimental period, gather some meaningful data on its effects, and then have a calm discussion about what those are, and make adjustments as necessary. If the results indicate that the proposals just can't be designed such that there are not unreasonable negative effects on local business then fair enough - I would not support them further.
Unfortunately there is probably zero chance that the above will be possible, partly because Lambeth have done everything in such a shambolic way, and partly because certain people have wound up the levels of hyperbole in the opposition so much that the whole thing has become too polarised for a proper discussion to take place. The opposition, or at least its most vocal proponents are not interested at all in any level of discussion, as was plainly clear at the recent meeting.
The LJroadmadness lot are actively making this a gentrification issue. My opinion is that if gentrification is going to occur (and it's probably inevitable) it's going to be driven by much more powerful forces than the effects of a partially pedestrianised area and some streetfront cafes. As with so many other issues in the gentrification debate, the symptoms are confused with the causes just because they are visible.
If the cafes and the rest of it are going to happen it'll be because of the current housing pressure and its financial implications. Refusing a traffic calming scheme isn't going to stop that happening. We'll still end up with the cafes and the increased prices - but with the same traffic-riven town centre when there could have ben a chance to change that.
The realistic way to protect the existing industry and associated employment is through planning policy. Response to planning applications, the masterplan currently in development. Argue for the expansion of the existing KIBAs.