I understand this is the departure of the Lead Pair with XV419 as the Lead Aircraft flown by S/L's G Arkell-Hardwick and D Reed. I can't ID the other aircraft seen, which was crewed by F/L's J Armstrong and D Mayner. The Second Pair were crewed by S/L J Nevil, F/L J Straughan, F/L's J Walmsley and A Spencer.
Image Credit : MOD RAF AHB
Prior to the World Record Flight ... The Phantom was only cleared for 10 Hrs continuous operation. Problem solved by ... 6 circuits of the UK undertaking 5 AAR 'Prods' (15 Hrs) with the help of Marham's Victors (undertaken earlier in 1969)
Rhino ... Have you any more info ?