Hen eating well still not laying eggs

[Marie2020]

I live in uk, it's been hot this past couple of weeks and heavy rain before that, she may be molting but not excessively.

 

[ChickenCanoe]

OK, I'll have patience with you if you have patience with me. I really want to help you fix this.
She looks good so I believe the issue could be either nutritional or she is just taking a break.
The UK should have good feed manufacturers that make feed based on the poultry nutritional research. So, with that in mind, I'm assuming the pellets are layer pellets. If that is the case, they contain the correct complete nutrition a bird actively laying should have. They may like it but there is no need for more corn, fruit, veggies and porridge.
It is very important to always know exactly what the crude protein percentage is in feed you buy. It should always be printed on the bag, on the guaranteed analysis tag or available by asking the vendor.
Consider if you start with a pellet that is formulated for the bird, then add those things to the diet, you will be lowering the protein to the point that ovulation can slow down or stop altogether. 16-17% protein is what they need to get to adequately lay eggs. If they've been deprived of adequate essential amino acids, they may need closer to 20% for a while to regenerate that reproductive system.
Corn and porridge are about 8-10% protein. Fruit and veggies are lower still. If their theoretical intake is half pellets and half of those other things, then you are dropping the protein below what allows for regular ovulation.
Consider also that the bulk of the content of layer pellets is already corn and/or other grains. adding more grain to the diet will further lower the protein.
Chickens eat grain and other seeds but they are not seed eaters or vegetarians. They are omnivores, so if one is going to feed anything other than strictly the prepared pellets, they need a fair amount of animal protein to get the essential amino acids they need.
Vegetative sources of protein are deficient in several essential amino acids like lysine, methionine and cystine. Since most feeds are vegetarian, especially in the UK where they guard against BSE (mad cow disease) by disallowing most animal protein in feed, they must add some essential amino acids in synthetic form. Otherwise chicken feed wouldn't provide what the birds need.
When we talk about pellets, we should differentiate between layer pellets and all other pelleted chicken feed. That is because layer feed should contain about 4% calcium and all other chicken feeds should have about 1% calcium. That is because 4% is too high for any birds that aren't actively building egg shells that make use of that excess.
Here is what I would do now. Since she isn't laying and you are already providing oyster shell, I would switch to another feed. A starter, grower or all flock type feed. Those feeds are usually in the 18-22% range of protein. Stop the corn, porridge, veggies and fruit. If you still feel the need to feed something else, give some fish or meat.
Continue to provide the oyster shell for the birds still laying eggs.
You mentioned a mix of grit and oyster shell. Could you elaborate? Grit and oyster shell are two different things and I wouldn't mix them. I provide them in separate containers so a bird can choose if it needs one or the other. If they are mixed and a bird only needs grit, they are forced to consume excessive calcium at the same time.

 

[Marie2020]

Firstly I want to tell you how deeply grateful I am to you, you have given me a wealth of information. I will look up the starter feed, it will be immensely hard to feed her separately, they are so attached to each other and stress out when they are parted. And of course I will look up this feed protein levels. Hindsight I know now I should have joined this site before getting them but did not have access to the internet back then. I repeat again thank you

 

[NatJ]

It's perfectly fine to feed starter feed to all chickens, with oyster shell in a separate container.

You could just put out a dish of each kind of food, although I suspect they'll all eat the starter feed if you do that.

 

[Marie2020]

Just going to try and add ingredients picture in, if I can

 

[Marie2020]

@NatJ going to order started feed
Thanks

 

[ChickenCanoe]

No worries. You don't have to feed them separately.
Like @NatJ noted, they will probably all want to eat the starter feed. Just provide a dish of OS in a separate container so any birds actively laying can consume it when they feel the need.
It doesn't matter what they call the feed, there are basically two kinds of feed. One with approximately 4% calcium for birds needing to build shells and all other feeds with about 1% calcium. Then the rest vary from between 12% protein to 28% protein.
The lower end on the scale is for adult game birds in maintenance. The high end is for game birds as chicks/poults and growing birds.
For chickens16-20% will work.
I breed chickens so I try to cut my adult roosters to about 13-15% protein because they are no longer building their bodies.
In nature, game birds like turkeys, quail, etc. babies eat a lot of insects and other invertebrates as well as vertebrates. Then, as they mature, their diet switches to mostly seeds and vegetation.
Chickens, on the other hand have a diet that is more omnivorous from an early age and as adults. However, they will eat more animal protein when young and as growing bodies, they need more protein.

 

[Marie2020]

No worries. You don't have to feed them separately.
Like @NatJ noted, they will probably all want to eat the starter feed. Just provide a dish of OS in a separate container so any birds actively laying can consume it when they feel the need.
It doesn't matter what they call the feed, there are basically two kinds of feed. One with approximately 4% calcium for birds needing to build shells and all other feeds with about 1% calcium. Then the rest vary from between 12% protein to 28% protein.
The lower end on the scale is for adult game birds in maintenance. The high end is for game birds as chicks/poults and growing birds.
For chickens16-20% will work.
I breed chickens so I try to cut my adult roosters to about 13-15% protein because they are no longer building their bodies.
In nature, game birds like turkeys, quail, etc. babies eat a lot of insects and other invertebrates as well as vertebrates. Then, as they mature, their diet switches to mostly seeds and vegetation.
Chickens, on the other hand have a diet that is more omnivorous from an early age and as adults. However, they will eat more animal protein when young and as growing bodies, they need more protein.

Having a problem ordering, people have become lazy and when I got through by phone no one bothered to take my order and put me on call waiting until the store closed. Now have to wait until Monday. . This is so hard to get my head around, I must get this right. One man had the chick feed, with the treatment in, would that be ok?

 

[Marie2020]

No worries. You don't have to feed them separately.
Like @NatJ noted, they will probably all want to eat the starter feed. Just provide a dish of OS in a separate container so any birds actively laying can consume it when they feel the need.
It doesn't matter what they call the feed, there are basically two kinds of feed. One with approximately 4% calcium for birds needing to build shells and all other feeds with about 1% calcium. Then the rest vary from between 12% protein to 28% protein.
The lower end on the scale is for adult game birds in maintenance. The high end is for game birds as chicks/poults and growing birds.
For chickens16-20% will work.
I breed chickens so I try to cut my adult roosters to about 13-15% protein because they are no longer building their bodies.
In nature, game birds like turkeys, quail, etc. babies eat a lot of insects and other invertebrates as well as vertebrates. Then, as they mature, their diet switches to mostly seeds and vegetation.
Chickens, on the other hand have a diet that is more omnivorous from an early age and as adults. However, they will eat more animal protein when young and as growing bodies, they need more protein.

Until I can order the right food, should I just keep the layers? Just read layers isn't so good. I have pumkin seeds would this help. Please forgive so many questions

 

[ChickenCanoe]

Having a problem ordering, people have become lazy and when I got through by phone no one bothered to take my order and put me on call waiting until the store closed. Now have to wait until Monday. . This is so hard to get my head around, I must get this right. One man had the chick feed, with the treatment in, would that be ok?

Yes. That is fine. You don't need medicated feed for adults.
Actually, you don't need it for chicks but I don't want to confuse you.