There's only feeds on 4e, and lyngsat doesn't seem to have a footprint for it, so i'm not even sure we can get it in the uk. I did a complete scan at the weekend and couldn't pick anything up on it.
Did you mean 4.8e? If so, you should be able to get a good fix on this with a 60-90cm dish in the UK.
As i've learned, just because you've got a lock on 1w, 13,19, & 28 etc. which are all strong in the UK, doesn't mean you're bang on the arc.
Your best bet is to make sure your pole is dead vertical, your dish / lnb is dead central; tune to 1W BBC World (11325H, 24500, 7/8) and align your dish for the best possible snr. Alternatively, use a meter if you have one.
Once you've tightened up, push the edge of the dish on the left, right, top, and bottom. If the snr rises at all, your not aligned properly. As long as it drops, you're ok.