ooops. I appear to have opened a small can of worms. I didn't intend to imply there was ever any restriction on motor vehicles. And indeed there probably never was - I think it was open to all before the 1960's (I saw a documentary a while ago which showed the specially built bus they had for taking bikes through the tunnel just after it was changed to motorised use only). But what I meant was, to restore use of the blackwall tunnel to non-motorised traffic as well as whatever else. Anyway, it's a moot point because it'll never happen. The cable car can be used by cycles which is close enough to the blackwall tunnel to ensure there is never a case for opening the blackwall tunnel to bikes. Although at £9 a go (or £1.70 if you can commit to using 10 trips over the year) I think I would find it a little frivolous to commute using it every day if I needed to go that way.