I am in Spain, connected via UK ISP. Connection refused for me.

Must be a Safari thing then as it's OK in Firefox.

So I see LM are looking at faults with a fuel pipe, and grounded the fleet for 24 - 48 hours for inspections. (Seems QE trials are continuing though) As this is for all variants, can we assume the issue is not F35B specific, or do we need to see which aircraft actually need replacements?

Unless it is specific to a type, which from the sound of it it isn't, and as the trials are allegedly continuing, then you could propose that it is an generic item for "later" build aircraft...

The problem is common to all variants but it appears that there are known batches of fuel pipes that are OK if the wording in this article is accurate. As the Italians have checked all 10 of their aircraft already we can assume that it is doesn't take long to do the checks and hence why the F-35B / HMS QNLZ trial schedule has not been affected.
U.S. Military, Foreign Operators Ground Their F-35s To Look For Faulty Fuel Tubes - The Drive