These are £99 on Tesco direct, but they are on club card boost if it helps anyone.

Argh forgot to add amazon.co.uk and also the image!

Apologies all. Messed this right up

I believe this is £80 in o2 stores?

I'm started to have my head turned recently by a lot of these so-called 'fitness trackers' - currently I'm in favour of the Tom Tom Spark Cardio...anybody own one themselves?

Charge HR which does more is only £99 in John Lewis.

This deal is for the Fitbit Charge HR. If you want a large blue one then amazon are doing it for £89.99 in the link above. Here's another link for it which might work easier for some:
https://www.amazon.co.uk/gp/product/B00P9PFP4M/ref=ox_sc_act_title_1?ie=UTF8&psc=1&smid=A3P5ROKL5A1OLE

Quidco are doing 5% on Sports stuff from Amazon just now so that could save a bit more? I've tried Flubit and they offered an instant discount taking it down to £87.29 but I'll see what their final offer is.

If you want another colour then try Decathlon as they're selling the Charge HR for £89.99 online and in store. They've got black, blue and plum colours but only seem to do the plum in small.

Price went up but it's now back to £89.99 for the Blue Large. Flubit offered it for £83.11 when I submitted it last time.

I think I'm gonna buy the Black Large from Decathlon for £89.99 as I'm not sure about whether you get a 2 year warranty everywhere. Decathlon clearly state 2 year guarantee and there's a store near me so I can sort any problems out easily.