The drum is moving front to back and making terrible noise

The front or rear tub bearing is going out.

check the belt that goes around the drum to be correctly mounted at the motor area also inspect the rollers that hold and turn the drum

It is so common that the washing machine can make terrible noise in many ways and is a common fault. In all occasions it is important that your observation is most important and so is vital to the identification /rectification and solution. If you have noticed that machine is vibrating when it is running then the motor /drum suspension has to be inspected. Since these fittings are located on the underside of the machine it is important that you look for the noise with a good inspection lamp. Manually turn the motor and drum and listen for the noise, if so the motor bearings, the drum agitator shaft and fittings must be checked. Also the suspensions which include the shock absorbers and springs, the body clamps must be checked to be in correct alignment and not changed in position. Tightening of the mounting is also very important. Finally in most cases a drop of OIL or smear of grease on the moving parts cane solve most issues.The noise seen on the front panle is due to vibration from the motor drive

It is so common that the washing machine can make terrible noise in many ways and is a common fault. In all occasions it is important that your observation is most important and so is vital to the identification /rectification and solution. If you have noticed that machine is vibrating when it is running then the motor /drum suspension has to be inspected. Since these fittings are located on the underside of the machine it is important that you look for the noise with a good inspection lamp. Manually turn the motor and drum and listen for the noise, if so the motor bearings, the drum agitator shaft and fittings must be checked. Also the suspensions which include the shock absorbers and springs, the body clamps must be checked to be in correct alignment and not changed in position. Tightening of the mounting is also very important. Finally in most cases a drop of OIL or smear of grease on the moving parts cane solve most issues.

For replacement of bearings check for tips on this visual link:

http://www.espares.co.uk/advice/washing-machines/a/7/1401/how-to-replace-the-bearings-on-a-washing-mach.html

Thank You for using fixya

Sounds like the rear bearing. If you hear the noise when you manually spin the drum or if the drum has any movement when you lift up on it then you need major repairs

Sounds loike the main drum bearings have failed.
Spin the drum by hand from the front, and if it feels rough, or is rumbling or grating, then the main bearigs have failed.
Quite an expensive repair, unless it is covered by the Hotpoint 5 year parts guarantee, check with Hotpoint.

If the drum being pushed forward makes the problem better, I would say your felt pads under the drum which the drum rides on are either worn down the metal or loose.You need to remove the front casing of your dryer and inspect these felt pads. If they are loose tighten them up and if they are worn they need to be replaced. When you have your dryer apart you may also want to try to move the rear of the drum to the left and to the right and see if the back of the drum is loose as this means your bearings are loose and may need replacement. To fix this problem however the top of your dryer will have to be removed to take the drum out (many times the top will tilt back on hinges) because the bearings are on the back of the drum.

Remove the drum.
Inspect the drum seal,rear rollers,tension roller,front drum glides.
It could be any one of these bad or a combination of theses.

yes the rollers can wear down and make alot of noise I believe there are 2 on yours.

more likely there is a bra wire caught between the inner drum and outer tub, possibly wrapping itself around the element in the bottom.