A plant ID please, you lovely people

Fire

A very vigorous climber (triffid) with small red flowers in June/July. Latex oozes when cut. Deciduous. Any thoughts?

Blue Onion

The leaves look like some type of rubber vine.. but I don't think they have red flowers.   Mandevilla vines have red flowers and milky sap.. but are tender.. or at least only root hardy in the U.K.  A mystery.  

Fire

Thanks Blue. I'll post again when in flower - not long now. That should give more of a clue. The flowers are small.

Borderline

I can't see the leaves properly, but take a look at Schisandra Rubriflora, the Magnolia Vine. 

Fire

Fire

Front of leaf



Back of leaf



Latex-type sap - stays like pvc glue on the hands

Dovefromabove

Sounds like the Climbing Fig Ficus pumila. Pronounced veination of the underside of the leaves is a good identifier. 
  

Fire

I think you might have it, Dove. Mine is not evergreen though and I can't find a picture of the flowers. If it is that, I'm even more minded to remove it. It is such a thug and has no place to ramble. Thanks for the closest lead so far.

Dovefromabove

There's lots of images here, including flowers https://www.google.co.uk/search?q=ficus+pumila+flower&rlz=1C1PRFC_enGB734GB735&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwjI-67BpvPaAhXKDMAKHbq4B5oQsAQIJg&biw=1093&bih=530 

and     https://gardenofeaden.blogspot.co.uk/2016/12/how-to-grow-ficus-pumila.html

I wonder if dropping its leaves is a reaction to the temperature drop in winter rather than being truly deciduous? 

Fire

Could be.

Dovefromabove

I've been doing a bit of reading ...  apparently removing it from brickwork can do serious damage if you're not careful