Totally stumped by this one, but if you go to

http://www.discoverwildlife.com/british-wildlife/how-identify-animal-droppings

You'll find a link to their enquiry service and they should help if yuo sent the photo to them.

The only ones i could find were both extremely unlikely - green woodpecker (giant version?)and grey wolf, (travels a very long way at night...)

Thanks for the link Stera I'll send them the picture see what they think, the things that wander round at night! :-)
Funny you should mention green woodpecker we did have one several years ago eating ants on the patio but not a giant one !
We had the same poo just one night last year and I thought it was maybe some sort of large bird but the same night , whether it was just coincidence I don't know ,the wire fat ball holder was pulled from the holder and halfway across the garden completely chewed to bits !!

Do you have ponds, lakes, rivers nearby? I'm thinking frog or toad. Their droppings usually accompany a small puddle. The droppings in your photo looks aged. Maybe it's been sitting there for a day or two as per the white fuzzy mold growth.

We do have a pond Bathgate but never had frogs in it due to the fish and only ever seen a couple of toads in the garden. The droppings were fresh this morning I clear them every morning and each day there's fresh always this white colour, can't decide whether its a bird but it would have to be a pretty big one as its much bigger than fox poo, its a mystery ! , if I could keep my eyes open all night I'd stay up and watch lol .

The powdery color white color of this large (as you say) scat usually comes from ground up bones so I'm inclined to think the visitor is a carnivore and the reason for the scat being dropped in the same place is territorial boundary marking. I do see animal hair in the scat which could be from prey or self grooming. A UK predator is my conclusion... I will leave th ID to you. Spray some organic repellant in the area to stop the visitations. I you lived in the USA I would bet my bottom dollar that these droppings would be from coyote.

Maybe a fox that has eaten the fat balls for its supper ?
The length of the excrement is the length of the bowel.

Not the normal shape for a fox though. They tend to be fairly narrow and have often a little twist at the end.

It looks to me like it comes from a large bird. Any pheasants or wild chickens about? Not exactly nocturnal, but active earlier in the morning than most of us humans!

Tugbrethil I think you've got it !! Yes we do often have pheasants at certain times of year round the feeders , they usually wake me very early in a morning, this must be a quite one ;-) I've googled and found pictures pretty similar , thanks for that I feel safe going in the garden after dark now ;-)

Then the white color is from scat high in nitrogen content.

I used to work for a nursery with chickens. They were a big hit with the customers, but not so much with me, since I had to clean up after them! :)

Yup one of my first jobs was at a chicken farm steam cleaning chicken cages and hauling around 100 pound bags of chicken feed. WHEW!

hee, hee!! That'll teach me to complain! We only had about six hens and a rooster!! :D

Peacock? sometimes seen one wandering around in woodlands, maybe you have a secret visitor, wildlife camera if you want to borrow it Kathy :O)

Thanks everyone I knew someone on here would know with all your different life experiences:-), no presents for several days now so the pheasant must have moved on I'm sure he'll be back though a couple of years ago we had one male with 5 females and mum with several chicks one year , wonder why I've never noticed their poo before!!
Now Barbara that would be amazing a peacock !!, Nothing would surprise me here at the moment, and your not that far away, we switched the outside light on a couple of weeks ago and there was a roe deer !!, We've found tracks and think it's living on the overgrown allotments at the bottom of the garden , only grazing on the grass hadn't done any damage.

Usually droppings that size when they first come off a nest to feed so could be pheasants but from the size I am thinking it is something bigger than a pheasant.

ps. the adult learning centre used to have peacocks and they used to fly out and wander around that was on the Corringham Road industrial estate, if one of theirs has escaped it is not that far from you as the crow flies. Keep watching.

I think we need Chris Packham round here Barbara , no sign for a few days then this morning there's 3 lots!! , Something has been making a mess of the lawn too, holes all over .I didn't know about the peacocks at the learning centre !!, that's a real possibility then , I can see I'm going to have to get up very early in the morning it's fascinating me what it is , or get Rob to lol.
Last night something ran very fast past the window, just as it was getting dark, followed closely by a fox which stopped and just stared in the window at us , when we lived at Knaith Park the most wildlife we saw were rats from the nearby farm, here in the middle of town its unbelievable!!!

The only reason why a peacock or any other bird would leave droppings in the same place overnight is that it had a roosting site over where the droppings are. Peacocks are going to roost above the ground at night to avoid preditors and if the site is a favorite one they will go back to the same locale most nights. If you have an eave or shade on your patio for to keep out the sun and or rain a bird could do overnight roosting up on the edge of it with the tail end hanging off and then from time to time....bombs away....onto your patio. If you don't have anything that would provide an above ground roosting site on or over your patio, you might consider forgetting about peacocks and returning to the idea of of an animal using scat for territorial purposes.

Paul says goose maybe but he thinks not a pheasant and he thinks the same as me it could be something that has been sitting on eggs for a long time and just comes off occasionally. It is a large bird of some sorts, will wait and see what you come up with, very interesting. Has anyone got geese down on the allotments behind your house?

Loosestrife that's out then , we do have a small wooded area in the garden but its nowhere near the patio and if anything was roosting on the roof we'd see it , nowhere to hide lol.
Yes it's fascinating me too Barbara I must get round to posting on the site Stera recommended, no no geese on the allotments only chickens , I know there are buzzards that have been nesting nearby( at the back of Duncans) but don't think they'd be big enough?and they are usually circling all day not night or very early morning.

Forgot to ask, what kind of coin is in the photo?

Raptor guano is usually fairly liquid, and dark reddish among the white. We have a red-tailed hawk that perches in one of our big Eucalyptus trees at work. Assuming that you mean what we in the USA call hawks, anyway, rather than vultures.