Suffolk Robber Fly ?

This is being posted for a collegue from work. (It was taken with no tripod with a standard sigma tele-zoom with 'macro' facility.)

It's obviously not for critique, however, it would be nice if someone could i.d it for him and me.

I had been chatting to him around a month ago re. Robber flies. A quick search of the 'net revealed maybe not-so-many in this country due to habitat destruction? Certainly couldn't find much about them in Suffolk.

However my keen-sighted collegue saw this chap at one of his frequently visited sites in Mid-Suffolk. It looks like a Robber Fly and it has predated a smaller fly.

Any help?

Thanks

This, I am pretty sure, is a dance fly - possibly of the genus Empis. They do look a bit like robber flies and are also carnivorous.

Cheers

Malcolm