On Apr 12, 9:32 am, Michael Hoffman wrote:
wrote:
Hello,

We are renting an apartment in central London (zone 1) for 3 weeks in
July. My husband will need to use the public transport every day to do
his research, and I will be using it most days taking the kids to
various places.

We believe we should buy some type of Oyster card, but my question is
whether it makes sense to purchase in advance.

No, just buy cards when you get here. You can get them at any tube
station, including those at Heathrow.

If your husband will use the tube before 9:30 everyday, it might be
worth it to get a weekly Travelcard on Oyster.
--
Michael Hoffman

Michael,

I do appreciate the advice. We'll definitely take it.