We've just started watching Bodyguard, a British series about an ex soldier veteran of Afghanistan who's assigned as a PPO (personal protection officer) to the UK Home Secretary, an attractive woman who has a devious agenda of her own.

It's very well made, has great immersion, plenty of realistic action scenes and is a nice spice up of terrorism and dirty politics.
There are also some superb vistas of London and although some of the plot can be a little predictable, it's fascinating to watch the skulduggery that goes on between the security services, the Met police and various ministers, which may well be based on fact.
Highly recommended and it's worth noting that Keeley Hawes was the voice of Lara Croft of Tomb Raider fame many years ago.