50k will be valve clearance check/adjust time which is an additional £66 - £100 (usually £100) on a service by a main Honda dealer.
Recalls
- Third gear synchro - is it notchy or does it pop out of gear in 3rd or feel like it could if you apply a bit of pressure?
- Engine wiring loom harness fire risk
- Handbrake catch mechanism failing
As above, rust between roof and windscreen, peel the rubber back a little bit and have a look. Honda UK are quite good with this, although it isn't a recall and not specifically covered under Warranty, they will do the work as a goodwill gesture 9 times out of 10.
If not, you could be looking at £700 by a Honda approved bodyshop, probably cheaper elsewhere though.
Also if for some reason its had timing chain / tensioner done for some odd reason (seeing a few of these now), make sure there are receipts from a reputable garage using OEM parts or walk away, not worth the risk.