How to repair this leaky joint between the toilet P-trap and soil pipe?

[Mascot]

Hi all,
A small leak has recently developed in this p-trap and soil pipe joint after the toilet is flushed. I'm guessing the leak stops when the level in the u-bend drops sufficiently.
I've been in the house about 14 years and there's not been an issue with it before, but close inspection reveals that an off-white/cream silicone-like substance has been applied around the joint by a previous owner, possibly during a bathroom spruce-up/retiling where the joint could have been disturbed and the silicone applied to seal it again. I want to avoid major works and am looking for advice about an in-situ DIY solution, ideally one that doesn't involve removing the existing silicone, as that could be a pain in the enclosed space. I do however realise that this might be necessary (and probably is..!).
If you click the thumbnails then more detail will be revealed, including how the white plastic ring isn't seated flush (I'm guessing this originally 'snapped on?) and the mess of silicone, especially around the bottom. What looks like water on the underside of the p-trap is actually badly-applied silicone.
I've drained the pan (leaving just enough water in to seal the u-bend) and the exterior of the joint is now dry.
Any tips or help or product recommendations would be very much appreciated. Many thanks!

 

[footprints]

What you have is a toilet pan connector which has an internal seal (see attached) the seal has leaked and it has been bodged with silicone.
You can try bodging it again but chances are slim it will work.
you need to remove the paneling and see what sort of connector you have then replace it, if it has some play in the pipe you may be able to do it without removing the pan.

Pan Connectors | Toilet Waste Pipe Connectors

A wide range of Pan Connectors / Toilet Waste Pipe Connectors are in stock and available to buy from Plumbing World at low prices with fast delivery or in store pickup

www.plumbingworld.co.uk

 

[Mascot]

What you have is a toilet pan connector which has an internal seal (see attached) the seal has leaked and it has been bodged with silicone.
You can try bodging it again but chances are slim it will work.
you need to remove the paneling and see what sort of connector you have then replace it, if it has some play in the pipe you may be able to do it without removing the pan.

Pan Connectors | Toilet Waste Pipe Connectors

A wide range of Pan Connectors / Toilet Waste Pipe Connectors are in stock and available to buy from Plumbing World at low prices with fast delivery or in store pickup

www.plumbingworld.co.uk

Thanks very much for your reply. The 'panelling' is non-removable, unfortunately - it's tiles on plasterboard, so would need destroying and rebuilding (with potential for damage to the walls either side), with tiles that are no longer available. I really wanted to avoid this if at all possible, so was looking for suggestions to reseal the joint without significant disruption. The previous silicone 'bodge' by the previous owner lasted at least 14 years, which makes me think it's possible to redo somehow. I really was interested to know whether there's a better modern alternative product produced in the past ~15 years, compared to simply removing the old and reapplying new silicone around the joint. Or if there's another non-destructive method that doesn't involve removing the permanent tiled boxing.