Just unearthed my Oystercard after a week of searching.
Can handle the Hull to London train journey but that Kings X to Ruislip trek on the tube really is a ballache.
A few sherberts in the KX vicinity me thinks before Going Underground.

Can't you get a train that stops at Watford, a lot quicker to Ruislip then?

I was at Kings Cross Royal Scot the address given is 100 Kings Cross Road, the road in question with the congestion charge on it was called Vernon Rise, I turned into this from the A501 and then did an immediate left into the hotel car park

Hull train goes into KX not Euston. I don't think its very easy unless I am forgetting a suitable cross-Herts route.

The zone starts on the road right outside that hotel and Vernon rise is inside the zone.

The tube does still go from KX to Euston.

It'd be quicker to walk.

So come into KX, get to Euston, go to Watford, come back to Ruislip. Not sure that's more convernient.

According to my Tube app, the journey on the Metropolitan line is 13 stations, no changes, est.time 36 mins. I would have thought by London standards that's like a Star trek beam-up? What's the problem?

I'll await the fine then.

Apologies if the answer to my question is in this thread somewhere....just don't feel like reading 12 pages in case it's not!
I'm visiting London next week, Monday to Thursday and staying at The Bermondsey Square Hotel on Tower Bridge road. I'd like a bit of advice on the best way to get there from Kings Cross and also what is the best sort of ticket to get allowing myself and my 15 year old to travel around over the days we are in London. Ideally if there's some sort of pass we could get that would be great.
Thanks