You can see your own country/town viewing times from here
http://spaceflight.nasa.gov/realdata/sightings/index.html

England viewing times here. (select your town/city)
http://spaceflight.nasa.gov/realdata/sightings/cities/region.cgi?country=United_Kingdom&region=England

the ISS makes 1 orbit every 1.5 hours (or there abouts) but takes about 6 weeks to get back to where it started. The further north you are the harder it is to view.

Higher duration times and higher max elevation make it easier to see. Clear skys and not being asleep are a must 

This is for mine and Datahopa's benifit. Brighton, UK times here
http://spaceflight.nasa.gov/realdata/sightings/cities/view.cgi?country=United_Kingdom&region=England&city=Brighton

All are in the wee hours at the mo. I will post when there is a viewing time more convienient to me being up and hopefully clear skys.

Tuesday June 22nd at 01:32 am for Brighton is the best viewing time for the ISS this month.
Not sure if I'll be awake then 'cos I work 
If you will be up then it will be visible for easily 2 mins and obviously the fastest moving bright dot in the heavens.
The eyeball mark 1 can't ditinguish features but a pair of 10x 40-50mm bins will and 100mm reflector telescope would be lovely 
Must phone my mate with the 210mm 'scope

The next best times are...

Thur June 24th, 00:50
Sat June 26th, 00:08 and 01:43

All times are for Brighton, England in local time (GMT+1). Check links in previous posts to work out your times.
Feel free to post here.
I will be up hoping for clear skies on sat 26th. If you PM me with your mobile number I'll text you when it happens.

Some useful info there Snowcrash, thanks for posting 

Doh! Guess who fell asleep?

The ISS has good viewing times all this week here are some...

Mon Jun 28/11:53 PM   ok
Tue Jun 29/01:28 AM   ok

Tue Jun 29/10:44 PM     good
Wed Jun 30/00:20 AM   good

Thu Jul 01/10:02 PM    good
Thu Jul 01/11:38 PM    good

Fri Jul 02/10:29 PM     good
Sat Jul 03/00:04 AM   ok
Sat Jul 03/10:55 PM   good

again, all times for Brighton, UK.

Very good view of the ISS last night at 10:55.

Problems yesterday with the docking of a Soyuz re-supply craft which is to be attempted again today (Sun 4th). What was cool last night is seeing a dimmer dot 15 odd degrees ahead of the ISS.

I have now seen the ISS with a Soyuz. Hurah.

Next viewing times...
Sun Jul 04/09:47 PM    ok
Sun Jul 04/11:22 PM    ok

Mon Jul 05/10:13 PM    good

Tue Jul 06/10:39 PM    ok
Times after this are getting poor

The ISS is coming round again...

Next best time from Brighton is

Thu Sep 02/08:52 PM

Click here to work out your times

The next few viewing times are:-

Sun Sep 05/08:39 PM
Tue Sep 07/07:58 PM
Wed Sep 08/08:25 PM

From Brighton of course.

I removed video due to dead link.

Good viewing and very bright from USA for the ISS this week. Poor from UK.

Check out the times...

http://spaceflight.nasa.gov/realdata/sightings/index.html

The ISS has come round again. Good viewings from the UK this week.

Best time for Brighton, UK is

Fri Apr 08/05:47 AM      5 mins
Sun Apr 10/05:04 AM    5 mins

bit early. There are other times here.

And here for main site to find yours.

Another good time from Brighton is.

Thu Apr 21/09:20 PM     5 mins.

More likely to be awake at this time. Should be some good times in next week or so.

If you would like to post here with your location I'll try and keep you informed of your best times.

I've seen the ISS about 5 times this week. Been clear skies and good viewing from Brighton, England.

Tue Apr 26       09:54 PM    for 3 mins
Wed Apr 27      08:44 PM    for 4 mins
Thu Apr 28       09:08 PM    for 4 mins

are the next few times from here.

Some handy links are.

Main page to select Country.
USA
UK
Australia

Yes I've been keeping an eye out too this week for the ISS.

I've seen it three or four times - Monday at 21. 28 was bright for about three whole minutes.

My dad nearly fell over when I told him it is travelling at 17, 000 mph, is carrying three personnel and orbits Earth in approx.  1 h 38 m !

Shuttle and ISS viewing on Friday 3rd for UK.

For Brighton at:-
Fri Jun 03/03:36 AM for Shuttle and 03:38 for the ISS. For 4 mins at approx 40 degrees.
Bit early/late for me.

ISS view is better on the Sat.
Sat Jun 04/04:00 AM for 4 min at 76 degrees

Viewing times from UK will get more sociable in about 2-3 weeks