Bicycle Tag of bike

What, what, what? so what's the link to Withnail? And what? It's a patch of grass?

Mind. Blown.

What kind of CSI madness is this. Random patch of grass, could be 1 of a million in London, obscure non-clue, and @oat44 correctly identifies the most nondescript bit of greenery in the arse end of nowhere ever? Refuse to believe

undulating narrow strip of land

u wot m8, looks like every other bit of grass ever

Well, it's the kind of film that makes you wander where it was shot, and whether it still looks like that 50 years on. I did a bit of googling after I watched it and so I guess I was more familiar with the 'undulations' :)

Old: Yardhouse at Sugar House Studios.

Hidden away off Stratford High Street, this affordable studio space was constructed for a grand total of £80k (which as someone with a building project which has gone horribly over budget, I can tell you is incredibly impressive for the size!). More info on it here:
http://assemblestudio.co.uk/?page_id=212

The Yardhouse is one of the projects which earnt Assemble, who built and manage it, a Turner Prize nomination: the first time a group of architects have ever been nominated for it I believe.
http://www.tate.org.uk/whats-on/tramway/exhibition/turner-prize-2015/turner-prize-2015-artists-assemble

New: Another award-winning building, just a (much) older one.

Nice one @Fox! Sadly it's going to be pulled down very soon to make space for the new Ikea housing scheme, Strand East http://www.strandeast.com/

Oh yeah, I forgot that bit. I think that was the plan from the start, that it was temporary, but I'm sure @hoefla can confirm. That also explains the 'Assemble before blowing up' clue of course.

I hope they reuse the tiles.

Moar cluez

I don't know where the current tag is. My plan is to watch more films set in London from now on.

It's not from a film. But it is very old and as you can see from the picture made of brick.

Maybe not.

Found it! But not going to be in that part of town any time soon. It is very old.

My manor, although didn't recognise it.
Very old indeed. God bless BTOB.

Old:

Bromley Hall
43 Gillender Street

New:

No connection; I just like it.

I know where this is and it is supporting a shed load more road / traffic on the junction above it, than it was ever meant to support - Hence the industrial-grade Meccano.
The junction above has been re-modelled in the last few years - it is questionable whether the re-modelling is for the better - for cycle traffic.
(I found it a bit claustrophobic, as a pedestrian in there)
I've just deleted the next bit about it being a stones-throw-away-from-a-suicide I was going to include, as that would give the game away to the google-sleuths.
As you were..... :)

I always thought the new tag would be a great location for a film.

Trying to think of a clue.

That's a lot of road you crossed to take that pic of Bromley Hall. You hop over the central reservation or what?

I walked back up the road, under it along the canal, back down and climbed onto that green bit. It was that or use this:

The lengths we go for a good pic...

Indeed.
There are a few cluez I can think of, but most of them would be dead give-aways.....

C'mon.
It is a stones throw from The River.

There's an interesting pub by the tag; some make a habit of visiting.

Good one, would #rep. I probably should have given that tag a health and safety warning, it's a nice old building which has had the misfortune to have a really crappy road develop next to it.

I took mine by going out into the inside lane when there was a little gap in traffic, but that piece of pavement outside the front is pretty dangerous as vehicles pulling out of Gillender Street onto the A12 tend to cut the corner off (as I found out, eek).