In the tunnel I Finally got round to winding some of the tomatoes round the strings that hubby put  up on Monday for me as the tomatoes were starting to scramble around the floor, also side shorted those ones too, some were huge. Applied bonemeal around the peach & pear tree in the tunnel too.

How much piggy did you have i can not believe your still eating it   

The joint was just over 3lb. I cut slices about the thickness of a chop ( ~ 1/2 inch) 6 decent servings, you could probably get away with stretching it to 8 if needed, the websites says feeds 10 which is comical. 

Back before it became stupidly expensive to buy unprocessed meat I used to just work down the list of joints each week, pork, beef, gammon, leg of lamb and then a whole chicken.  Friday was fish and Saturday was the only filler day either curry, pizza, pasta etc. 

It's so much easier not having to think about what to cook each day.

Has anyone used nematodes?
If so where from and how effective.
I've found them good for potatoes in the past but haven't used for years but think I will have to this year.

We use nemaslug on our potatoes.  It does a good job !

We find it helps as a preventative, but its not a silver bullet.  Spray with aspirin when the forecast Hutton Criteria for the area are red (see https://blightspy.huttonltd.com/#/forecast) with the idea that it stresses the plant, closing the pores and therefore making it less vulnerable to the late blight spores.  Don't overcook it and weaken the plant, keep them well fed and strong, and take off excess foliage.  All together it increases the odds of a good year!
Once they have blight, you can try removing the affected foliage, but you are only buying a bit of time.    And on an allotment site, once one plot has it ... again it is only a matter of time. 

I do like good value but my son says buy once but well.