Due to the UK being shut off from the European mainland because of the new Covid-19 mutation it is very likely your order will be delayed until further notice. There is nothing we can do about this at this point in time
Of course it is nice to be able to buy the necessary accessories immediately, if you order a clock somewhere. That is why Frank not only thought of nice clocks, but you can also buy handy accessories for your clock. So you have a small choice of a number of batteries that are most commonly used for clocks.