Bathroom tap, new washer. What next?

Is there a plastic cartridge left on the other half of the tap? That all looks very familiar.  I'm not sure there is actually a washer to change, I think itight be the whole cartridge

Cartridge, you are probably correct. Being a bit old school with my terminology.

But for the life of me I can't suss out how to get to it.

Here are two more photos. There is no way that the lever can come out of the top, so it must all plop out of the bottom but not a clue how.

Take a picture of what's left on the basin. There should be something like THIS left behind, that's the cartridge. They are usually the culprit for leaks.

Just make sure you get the right diameter and washer pattern...

Hi Fettlin.

Definitely nothing left behind. The two braided cables plug in to those two bigger holes inside the bottom of the tap, held in by a small plate screwed down.

The inside of the tap has an internal thread and is about 30mm diameter but can't suss if it is even meant to be dismantled.

I could call a plumber or probably cheaper to just buy a new tap.

If you remove the grub screw at the top does the whole of the inside mechanism pull out?  It looks like there are two parts, the styled outside and then an inner part that does the plumbing.  It's likely to be horribly still though

Tried that set screw at the top behind the lever?

The two braided cables plug in to those two bigger holes inside the bottom of the tap

Doesn't that mean that your tap is a mixer tap, and the cartridge is inside the shiny metal bit.

I had one like that for my kitchen sink (but larger). I ordered an entire new tap - it's a fairly standard sized hole in the basin, so a straight swap.

Quite why a job that used to require replacing a tiny plastic washer now requires sending an entire tap assembly to the household recycling is beyond me. Maybe I am just too stupid to understand.

Slight hijack but does anyone have a brand of ceramic cartrige they recommend that actually works?

Bristan replacement leaked less than the one it replaced but still leaked and the Roca bathroom basin has started to drip too.

I blame the hard water but it can get damned annoying and expensive to replace every 12 months

Ah, then the cartridge is still inside the tap body. As said above, undo the set screw behind the lever (undo anything that you can basically!), it should come apart and leave you with a cartridge, which in most cases will have cracked somewhere.

Although, if you recon the two braided hoses coming into the tap body are cables, best get a plumber in....

So the two holes at the back.

The lower one is for a grub screw, which makes me think the internal body should drop out, but doesn't.

The top hole just had a cover. I can not see what it achieves at all.

I suspect it is a bit like me and has seized up with old age.

Quite agree about the lack of serviceability, ridiculous

Ahhh ha.

I've just wacked it with a rubber mallet.

And the internals plopped out.

The bad news, the lever square hole is broken but maybe bodgeabke.

just get a new tap, you've done the hard part taking it off.

Eh voila.

With the help of a 27mm socket and mole wrench I now have a cartridge.

Now it's time to pop to the shops

Now it’s time to pop to the shops

Then realise there’s 101 different cartridges available that cost slightly more than a new tap would cost.

Well done.  Half of diy skills is knowing just how hard you have to whack something

Yep, that cartridge unit looks well borked, especially with what looks like a fair bit of scale on it. If the innards are the same, no wonder it wasn't working too well.
Screwfix replacement here That one's 35mm, there's also a 40mm equivalent; either for the princely sum of less than a fiver.

Thx lawman, that's saved me wondering.

Sorted.

Thx all for the help.

https://imgur.com/a/fJmbV6E

Quite chuffed. Yes it took 3 trips to DIY shops but I do like the tap and a lot cheaper than an equivalent tap.