Which box set to watch with parents

[Shells]

They're coming to stay for several weeks. We like to watch things together. Our quite grown up 13 year old will watch too. Minimal sex or extreme violence please.
Think The Wire etc. would be too much for them and subtitles would be too hard for Dad (poor eyesight).

They love British crime (Morse/Prime suspect etc.) and a bit of costume drama.
Any ideas people?

Life on Mars is very good, as is Sherlock (the BBC one with Benedict Cumberbatch).

They've seen Sherlock - but hadn't thought of Life on Mars - great idea.

Death in paradise
Upstairs Downstairs (the new ones),
House (brilliantly based on Sherlock but in modern medical context)
Hornblower (favourite with my PIL who like the same sort of stuff)
The Titanic drama series (as opposed to the feature film)

Ah ok Cheese - some good ideas. Don't know Death in Paradise. Is the new Upstairs Downstairs any good?

Did thry watch house of cards back in the day? They might like the nrw one on netflix.
i didnt like the new upstairs downstairs or death on paradise. It was a less good midsummet murders.

how about new tricks? lewis?

My parents have just started watching breaking bad yo

Modern family would be a fairly safe bet. Partly features a gay couple so not if they're old school or have strong religious beliefs about this. Can't go wrong with fawlty towers or only fools and horses.

They've probably seen it but Downton Abbey?

Ooooh thanks so much for extra suggestions. They don't live in UK, but do get a few of the shows at 'home', so have seen Downton and I know they have enjoyed New Tricks. Modern Family - hmm. Could work. They would be fine with gay etc. I've also considered Breaking Bad (as I want to watch it myself and haven't).
North/South - excellent thought. Bet they haven't seen it. And House of Cards. Hmmm.
Lots to think about.
Thanks!

Elementary? The American version of Sherlock (but he's still English, played by Jonny Lee Miller, but it's set in NY). Similar in feel to House and suitable for all.

I second Elementary. And if they love Morse, have they seen Endeavour? Shaun Evans is brilliant as the young Morse.

My parents also love The Mentalist out of all my many box sets. Maybe they'd like Castle as well?

West Wing, Mad Men?

Not bb for a 13 year old!

Mad men
Nurse Jackie
Greys Anatomy
Ashes to Ashes, my teen loves this!
West wing
Six feet under-not for teen

I loved Death at Pemberly!

Death at Pemberly is a great suggestion. It's a bit cheesy but I really enjoyed it.

The Big Bang Theory. Only the first inital episode has a bit at the beginning about donating to a sperm bank but the rest is tame.

Broadchurch. Twelve part murder mystery with the amazing Olivia Coleman.

Death in paradise

Broadchurch is an 8 part drama.

Person of interest ?
Warehouse 13
Vampire diaries - a bit ridiculous but quite tame really, my pre teen loved it.

What about Hustle?

The good wife.

Damages. (Some violence)

Parks and recreation. Series 1 less good than 2 or 3.