I think Dove is right about the need for some shade.
I have one of these that appeared out of the blue, growing in the creviced, mossy trunk of an old elder. The trunk faces south, so gets a fair bit of sun, but is shaded by an overhanging branch.
I live high up in the Pennines, where summers are not always sunny and rainy days mean we are lost in the clouds. The moss on the tree trunk holds water. When we did have a hot dry summer with lots of sun , the fern went yellow and then died back, and was only restored to health by the return of our 'normal' weather.
The most flourishing colony I have ever seen was on top of an old stone wall, in a shady lane, in the very wet Lake District. If you leave it in the sun and withold water I fear you may well lose it.
I've just been to look at mine. It is a late spring here and the sheltering leaves are not yet fully expanded. After just a few days of sun and no rainfall, my fern leaves have shrivelled to nothing. I shall have to spray it with water.
Pleased to hear about the 'Return of the Meerkats' !!!! Give plenty of water , and full sunshine may not be too much of a problem . As Dove says though , dappled shade is optimal for most fern species . Good luck with it !
In hindsight , and looking at my own ferns , a great number of them are in full sunshine all day and have thrived for many years ! Trial & error I think !
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https://www.gardenersworld.com/plants/plant-finder/polypodium-vulgare/
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
Give plenty of water , and full sunshine may not be too much of a problem .
As Dove says though , dappled shade is optimal for most fern species .
Good luck with it !
Trial & error I think !