Walk in battery replacement / pressure test Central London

[williaa68]

As per the title really. Anyone know where I can get a replacement battery, reseal and pressure test for my Tag in London without having to leave it for days? Ideally somewhere near Liverpool Street? Tks v much in advance

[Dicky Knee]

I have used Jonathan Geeves on Liverpool Street (corner with the Arcade) for battery and pressure testing. They were fine.

[williaa68]

Perfect - thank you