Got this from Vigin's website
A. Premium Economy/Economy
You are permitted ONE piece of hand luggage each. This must be able to fit under the seat in front of you, which means it must not be larger than 23cm x 36cm x 56cm (9in x 14in X 22in) overall and should also not weigh more than 6kg. Passengers are asked to take only essentials on board and check-in all non essential items. Please note that these procedures are being strictly enforced by BAA staff. An infant's carrying basket and food for consumption during the flight will be carried free over and above the baggage allowance, as will a fully collapsible wheelchair and/or a pair of crutches. Both the carrying basket and wheelchair will normally be carried in the hold.
Upper Class
Upper Class passengers are allowed two pieces of hand luggage, each not larger than 23cm x 36cm x 56cm (9in x 14in x 22in) overall and not weighing more than 12kg together.N.B You should also avoid packing any sharp objects in your hand luggage, such as scissors, tweezers, knitting needles etc. Please make sure you include important items, such as travel documents, medicines, money and jewellery in your hand baggage.
HTH
OJ