Lydd purchases Manston Radar?.....
Depending on workload, but I found it no problem to keep an eye on these people as well as other traffic inside the 'official' area of operation. You could have as many as (say) 20 on frequency and not be busy, but also with only 2 or 3 on you could be busy especially if they're infringing.
If you're not an experienced ATCO you wouldn't understand. Suffice to say the actual area of sky covered by Farnborough East (and North for that matter) is quite big for VFR traffic so 20 aircraft could each be in their own little bit of sky well clear of all the others.
