Bob Flowerdew - "The no work garden". Found it remaindered in a shop at Bicester and bought it to read while OH was shopping for Britain. Full of good sensible advice.
They might not fly but they can certainly climb, I have found them 8 feet up a grape vine.
Looks like beech to me. Don't worry about the leaves appearing, mine are at the same stage and will fill out over the next two weeks.
Was an investor in the future using taxpayers money, reckon I got through £120 million. I was a Civil Servant working on science and technology grant programmes such as nanotechnology. My last post before retiring was about encouraging international cooperation in science and technology with the richer countries of the world.
I think you mean Natal plum a South African plant, some useful info here www.hartley-botanic.co.uk/featured-blogs/bob-flowerdew/27-natal-plums Seems like you should be able to find seeds in the UK but if not then buying small quantities of seed is easy enough.
http://www.greysquirrelcontrol.co.uk/ should give you some ideas and facts about tree damage. However it is worth noting that all previous cull attempts have failed.
Sounds like you are interested in what is now known as forest gardening - useful link for you http://www.agroforestry.co.uk/forgndg.html
A couple of suggestions, Russian vine or clematis Montana. A photo of the offending plant in full growth during summer would help a lot.
Laurel is evergreen and will grow tall. It would need regular but not frequent pruning to keep it in good shape. If neglected it will grow as wide as it gets tall.
Boring old daffodils, just those vulgar nodding yellow heads. Bah! Don't know what anyone sees in them.
From my trial bed in 2011. Sadly slugs took a terrible toll and only the strongest survived.