How to access taps behind a P shaped shower bath

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If you cannot reach the taps with your neck broken and your face squashed against the side of the spikes of fibreglass, with your arm scratched and sliced by it, then you will struggle to get them out, yes.

Could they be reached through the wall it will sit against? (access panel).
You could take the bath out if you install it with that in mind.
You could re-drill new holes I suppose but you need to look at where and how they will be for strength.
You could fit it and look at it that it's not really your problem. Presumably you didn't choose the bath.

why buy the bath. they make left hand and right hand p shaped baths......

Very long flexis and taps where you can change inserts in future.

Yes, that would be my answer too, if it’s not practical to access through a Partition Wall, Flexible connections are not ideal, especially on an unsoftened supply in a Hard Water Area, but often the only solution to your customers design preferences.

As to the not my problem response, I will treat that with the contempt it deserves, if you’re going to do the job at all, Do It Right !, and even if you think it will be a Fit and Forget, one day someone will want it fixed, possibly the New property owner, and you might be the poor sod they find in the yellow pages or online 😂.

Installing a P-shaped shower bath in a small bathroom presents a challenge when it comes to accessing the pre-drilled tap holes. The bath's shape and the limited space, as shown in your diagram, make it difficult to reach and tighten the tap nuts using standard tools. To address this, you could use specialized tools like basin wrenches or telescopic spanners, which are designed to work in tight spaces. Alternatively, cutting new tap holes in the center of the bath rim could offer easier access for future maintenance, although this would require covering the old holes with decorative covers or blanks.

If you proceed with the current tap hole positions, using flexible tap connectors might simplify the installation and maintenance process. For future tap removal, ensuring there's a removable panel or access hatch could be beneficial. While cutting new holes isn't strictly necessary, it might be worth considering if you're concerned about accessibility. Consulting a professional plumber could provide additional solutions tailored to your specific setup.