BT Home hub 5 and changing provider

I have been on BT Infinity fibre broadband since June 2014 using a BT Home Hub 5. Speeds are fine, about 37.4 download and 4.9 upload. When my introductory price offer ends and I'm out of contract I want to consider other fibre providers.
Please can those more knowledgeable than me advise me whether I will need to have a Fibre Modem installed to allow me to change provider as I don't have a separate modem with the Home Hub 5.

Depends on who you choose, the Sky and TalkTalk fibre devices have the VDSL2 modem built in. Those that don't should be engineer based installs or let you know you need to source an appropriate device e.g. the Billion 8800NL at £66 is a VDSL2 modem with router built in an 802.11n (AC version available for more money)

Just to add that the HH5 will work on Plus.net, as they're owned by BT but quite a bit cheaper.

The HH5 is considerably better than the router they provide too

How do you set it up? Isn't it locked down?

I have an unlocked Homehub, but when I was with Plusnet I used a locked down Homehub. There are a few BT resellers that it will work with and PN is one. There was a list on the web somewhere but cannot recall it now.

You just need to replace the generic BT username/password with your plusnet username and password.

I'm guessing it validates the domain (plusdsl.net in this case.)

It still gets automatic software updates too.