While planning a one-week family trip to London I'm looking into the most convenient and cost-effective transportation method around town. It appears that a 7-day Travelcard (Zones 1-3) might be the hassle-free way to travel around as it can be bought from the VisitBritain website and be delivered to my postal address (outside the UK) well before our arrival date.
An alternative would be to issue the travelcards at a railway station after arriving in London, which would made them eligible for 2FOR1 discounts at many attractions. The downside would be you would have to go to a railway station to buy the travelcards AND issue photocards for all 5 of us.
Questions:
Would all persons need to appear in front of the person issuing the photocards+travelcards at the railway station or would one of us - say me, the father and husband - suffice, of course bringing along passports and photographs for all of us?
I read somewhere that these passport-sized photographs do not need to be passport-grade or even actual photographs, they could be printed on normal paper at home, is that so?
Many thanks in advance!