Just curious
About 30mm long and walking on inside of a window

Snod

I think its a thick headed fly (Conopidae).

It looks like an Ichneumon wasp (Amblyteles armatorius) It's a parasitic Wasp.

If you don't find an answer , contact these.

http://www.britishbugs.org.uk/gallery/heteroptera/Miridae/miridae.html

Yours seems quite long for most of the above specimens listed.
(insect , that is)

If it's French, KILL IT ! Good luck

Habdab is right.. well done Habdab

THAT looks like the beastie
Quite pretty really

Thanks all
Snod

Excellent, its lack of a sting threw me into thing it was a pretend wasp.

Its length depends if Snodvan was including the antenna in his/her measurements. They can be almost as long as the body, thereby doubling the length.

It's a locust , someone close May have lizards to be feeding them to an it's escaped . Too cold to have them in this country to survive for long

Nothing like the many locusts I have seen in Africa. I reckon it is the parasitic wasp. The 30mm I quoted was the body --- those long antenae add more

Snod

Besides being far too short for it to be a Locust The colour is completely different. The neck on a Locust is quite thick whilst the neck on this Wasp is almost none existent. Also it doesn't possess the heavy musculature of the Locust's hind legs.
I kept and fed Reptiles for many years and never saw a Locust that looked like this.

Sorry lashs, it's an Ichneumon Wasp.

Quick guide, a locust looks like a grasshopper. That aint no grasshopper. Parasitic wasp is right.

A locust is a grasshopper.

And that will be why it looks like one I should think. FFS

That's what I was thinking, great minds eh?