Oil leak around EGR

[greysquirrel]

I noticed a small amount of oil around the EGR seal a while back and just cleaned it off. I have just topped up the washer fluid and noticed a fair amount of oil on what appears to be the EGR seal (although it could be coming from just above an running down). It almost looks like the oil is being forced out under pressure as it has 'splattered' on the underside of the engine cover. It has also just started to drip down onto the pipe.
Any ideas what this may be?
Hopefully the picture works and helps you see what I mean.