Hedge for narrow strip

Thank you for these suggestions, all appreciated. I plan to put a lot of hedging in, so I might even try a few of these in other places.
In regard to the height, I would be happy for something to grow at least waist height, but understand the bigger it is the more water, larger root system itll need, plus a larger bush would potentially stop rain getting to the base.
Euonymous and Lonicera look amazing and sound more suitable than Box.
Id be open to Rosemary and Lavender as well. I already have the latter growing very well nearby.
Yep, I live in the Streatham area of London, south of the city. The area in question does get a lot of sun and is reasonably well protected from wind.

Thanks again!

 

Rosemary is as hardy and tough as my Auntie Nenna, it grows very happily here in the soggy and cold North East.

It's one of the best plants one can have, evergreen, easy to prune if/ when one so wishes, gives crops all year round and has lovely flowers mainly in the spring but may give a surprise Christmas decoration too.

To my surprise it also seems to sprout from old wood so forgetting neat pruning for a decade or two is not a problem.

 

It didn't survive below -15C in my last garden - rural central Belgium - and doesn't like to be wet at its feet either.

I had to grow it in a pot and shelter it over winter. I brought a survivor with me when we moved here where the worst we've had was one night of -8C. It is now huge and very happy in a dedicated bed with lemon thyme, orange thyme, tarragon, oregano and dill. I've had to give chives and sage their own beds. Great to have happy herbs.

 

Rosemary and lavender both grow 'out' quite a bit, and would therefore need trimmed far more often if the space is tight. I think they'd both be more trouble than a simple evergreen hedge.

I'm assuming both of those plants would do well in the site to start with.

 

Euonymus Green Spire has a naturally upright habit and would suit a confined space, plus it looks good over winter. I’ve also grown Thyme as a low hedge but it gets woody after a couple of years.

 

I've always had to overwinter rosemary undercover as it can't cope here well enough, but the way things are changing, climate wise, that might become easier in future. The more upright varieties might be ok in the OP's site and location.
I think the site will need some good prep, regardless of the plant, as there's likely to be a fair bit of mortar/hardcore etc due to the proximity of the driveways @EdC. I see that you've checked and say it's good, but it might be different at certain times of year. Do you get rainwater running off the driveways into it?
You could certainly use lower growing, ground covering plants instead of something higher, but it would depend on whether they'd spread too much sideways and cause any problems.
Thyme is actually pretty good in that respect as it doesn't mind being stepped on, and there are lower growing types which might suit.