Pic 1 looks like lonicera nitida which grows very fast and needs trimming several times in the growing season to keep it tidy and within bounds

Thanks Andrew...I need to reduce it by at least 2 foot in width and probably the same off the top....will that kill it? x It spreads terribly...keeps popping its head up in the lawn!

Just googled lonicera nitida - think thats what next door have....my hedge is a bit more "hairy" and leaves a bit further spaced and not as symetrical....will get another pic tomorrow. xx will keep looking at images and see if I can find a lonicera nitida that matches my monster x

Those leaves look rather too big for lonicera nitida to me unless its a real closeup but I haven't a clue what it is, sorry! Are those bigger leaves part of it?

The bigger leaves look like lilac tree leaves and grow through the hedge, no idea what it is, think it might be a honeysuckle of some form? Every year since I've stayed here, 6 years, I try and leave it alone and cut round it to see what it is, a few years mr has cut it away and last year it was totally covered in greenfly so I chopped it, the leaves of hedge are in close up, they are about 2cm wide by5cm long, slightly serrated. The stem:wood is a reddy colour. I shall try adding a few more pics tomorrow x

is it a form of escallonia? does it ever flower?

Thanks Seaburn, dont think thats it either....although a few images I seen look similar - its never flowered....just grows like a triffid....

Looks as though the solution is to chop it anyway. Doesn't sound as though you like it much anyway so I would risk it.

It looks like one of the bigger cotoneasters to me--maybe C. lactea?