Browsing through here I thought it would be good to post a chart to see if the forex company that sent your email was right.
And...they were wrong
The pink dotted line is the 1st November 2011, and the grey line is the price now. This is EURGBP so the lower on the chart, the more euros you get for every pound.
As we can see the best time was actually back in June 2010 (at least since the big jump up to almost 1:1). It'll be interesting to see what happens over the next few months. I'm not a believer in fundamentals (the big players use fundamental news to their advantage, not ours) and not a believer in being able to read the chart long term - I'm more about intraday trading when I do.
Edit: changed to a URL so you can see the whole chart as the forum cuts off the right side (and showing this chart at 640x480 isn't going to work )
Edit edit: Forgot to say, Mark was right