' Midnight eighteen' at Leeds. There is no services at 00.00 at all in the country either 23.59 or 00.01!
That is correct - it says so in the NRT.
Although saying that there was a Thameslink train timetabled at Wivelsfield IIRC at midnight about 4/5 years ago - this was changed to 00.01.
Just as another point I think 00.00 is used only on digital clocks for ease of representation of the time. Although it is 'wrong' the actual representation for midnight (on the railway anyway) is given as 24.00 (this was also what was shown in the TL timetable) - if Phil HAD to announce that (not that he would) it'd be 'midnight' or 'twenty four hundred hours' - not 'oh oh oh oh', 'oh oh hundred hours', nor 'midnight hundred hours'.
(The reason I did say 'wrong' is because a day is officially 00.00.00 - 23.59.59 and 24.00.00 does not really exist as clocks would go 23.59.59, 24.00.00, 00.00.01).