David of Broadway wrote:
anybody have any suggestions for free or inexpensive wi-fi in or
near Hendon?

Most/all Wetherspoon [1] pubs and McDonald's restaurants have free wifi.
The Wetherspoon connections require a username and password (see link)
but the McDonalds ones are provided by The Cloud and need no
registration or password, though you need to open a browser window and
keep it open on their special page before you can download email.

If you're here long enough and want easy online access, you can get a
T-Mobile 3G 'mobile broadband' PAYG USB modem for £50 and use it
anywhere for £2 per day, or £10 per 7 days, or £20 per 30 days. [2]


[1]
http://www.jdwetherspoon.co.uk/pubs/....php#free-wifi

[2] http://www.t-mobile.co.uk/shop/mobil...r-day-options/