I am flying via Heathrow tomorrow and nearly all the flights are at present on schedule there.
If the link on Peter's post does not work the current hand baggage and other restrictions are as follows:
"Customers travelling from or through a UK airport are asked to ensure they comply with the new hand baggage restrictions, put in place by the UK government, to prevent delays at airport security search points.
Before leaving for the airport:
All customers are strongly encouraged to update their bookings with contact details so that they can be contacted if necessary.
Customers are also advised to check in online to help reduce queues at the airport. If you have checked in online and have baggage to check into the hold, simply go to the fast-bag drop when you arrive at the airport.
Customers checking in at UK airports are asked not to arrive before their flight opens for check in to help prevent further congestion at the airport. This is three hours before departure for longhaul flights and two and a half hours for shorthaul flights.
All customers are asked to ensure they have sufficient time to clear security as this is taking longer than normal due to the additional checks.
If you are travelling to the USA you should provide your Advance Passenger Information before arriving at the airport.
At the airport:
If your cabin bag exceeds the new dimensions or contains prohibited items, you will be asked to repack it or check it into the hold. This may cause you an unnecessary delay.
If you have large electrical goods (eg laptops, digital cameras etc) in your hand baggage, please ensure these are easily accessible as you will be required to remove them for x-ray screening.
Hand baggage restrictions:
Customers are advised to check this information regularly before they travel to ensure they have the very latest information. These restrictions were last updated on 21 August 2006
Customers departing from the UK (including customers transferring through the UK):
Customers travelling from the UK will be able to take on board as hand baggage one cabin bag no bigger than 45cm x 35cm x 16cm, the size of a small laptop bag, inclusive of wheels and handles
Cabin baggage MUST NOT contain:
Cigarette lighters (Cigarette lighters may not be checked into the hold. They can be purchased airside and disposed of before boarding a flight)
Items previously prohibted in cabin baggage, such as sharp objects, should not be carried onboard.
Cabin baggage CAN contain the following:
Electronic equipment, including laptops, mobile phones, digital cameras and portable music and DVD players
Essential prescribed medicines in liquid form provided they are under 50ml. Customers will be asked to taste the liquid. If they cannot taste the liquid for any reason they will be asked to go to an airport pharmacy to have the medicine verified.
Baby milk and liquid baby food (the contents of each bottle MUST be tasted by the parent)
Other items normally carried in cabin baggage, such as books and essential items for the flight, as long as they fit into a bag no bigger than specified above.
Nothing must be carried in pockets.
Please ensure that you do not check into the hold any essential items such as:
· Household and car keys (including electric key fobs)
· Travel documents including passport and itinerary and any important contact details
· Essential medicines for the journey
· Wallets or pocket size purses
To help progress through the airport all customers are encouraged not to include items capable of containing liquids (e.g. bottles, flasks, cans etc.) in either their hand or checked baggage.
All electronic equipment will need to be removed from the item of hand baggage and screened separately. We recommend these items be packed carefully for easy removal at the security search point.
Pushchairs and walking aids will be permitted but must be x-ray screened.
Customers may purchase any item in any store in the departure lounge before departing their final UK airport and take onto the aircraft as normal, unless they are travelling to the USA.
Extra restrictions are in place for customers travelling to the USA from the UK. Customers WILL NOT be permitted to take any liquid or gel items purchased in the departures lounge into the aircraft cabin. All food or beverage items must be consumed before boarding.
#Customers transferring through the UK will be subject to the same hand baggage size restrictions as those originating their travel in the UK. If you arrive into the UK to connect with a flight (irrespective of original carrier), with more than one laptop size bag (45cm x 35cm x 16cm), you may be refused travel. Customers transferring through a UK airport onto another flight must not buy any of the prohibited items such as cosmetics or toiletries until they have been cleared through security at their final departure from a UK airport."