The special episode of Benidorm in on this Sunday (31st May) on ITV1 at 9.00 so I guess it is a May special.
And added a new episode still.

Turns out its a summer special
Your favourite holidaymakers are back. Benidorm returns for a one-hour Summer special on ITV1 that delivers thrills, drama, action and, of course, award-winning comedy.
The special also features a return appearance from Elliott Jordan who plays Jack – the local bar boy who declared his love for Janice at [...]

Benidorm Episode 2.6 is on ITV1 on the 4th June I think, this is the repeat of series 2, Elliott’s first appearance in it.
Anyone know when the special will be on? As its meant to be this month and I haven’t heard or seen anything.

I found on Virgin Meda some quotes when Elliott joined Eastenders.
Callum apparently gets into hot water right from the start, by copping an eyeful of seductive Stacey (Lacey Turner), much to her other half Bradley’s (Charlie Clements) annoyance.
Callum found the experience of arriving on set both “completely surreal” and “quite magical”, according to website Digital [...]