where can I find the 'twigs' that make this centrepiece?

Have you tried Wilkinson's? My local one has quite a large range of artificial flowers and twigs like the ones in your pic. Also also seen them in Matalan but I think they might have come with a vase.

x

Try your local garden centre?

but the woods idea appeals to my tightarse nature ? if you do that wash them like you would dishes and dry them thoroughly (a sunny day would do it) then coat with hairspray which seals them a bit (oh the things i do as a primary school teacher)

One type of branch that is commonly used for table decor is called Manzanita branches but they can be expensive and you may have to import them. Google alternatives to Manzanita branches to give you some ideas on what sorts of branches would be strong enough to do this type of decor and take it from there x

Dunhelm have ones like that in both white and pink currently.

I am having curly willow which is similar with orchids entwined around them. My florist is getting them so you may be able to order from a florist. It can work with twigs that you find in the woods too, I am not sure if they need treating or drying though. Maybe a florist HIB on here may be able to tell you.

Can someone please help me, ive found these which I love, but the descriptionisnt very clear - does it mean that the part of the branch that is pictured is only 4cm??! surely not?! x

http://www.floristrywarehouse.com/index.php/artificial-apple-blossom-branch-pink-1.html

The "twig" is 120 its the flower heads that are 4 cms x