Brum's quite straightforward, as B73 has said. Leeds, too, parking at Multiflight on the western side.
East Midlands will probaby treat you as if you are a fixed wing. Get Donair handling; more straightforward if you can (probably far cheaper than main apron) but don't expect marshalling.
If you're considering Heathrow you'll need a briefing from someone who's done it before and preferably do the flight with an experienced pilot. In addition to the helilanes to contend with in the first place, there are special prodedures based on knowledge of local ground features and it can be a bit hectic with frequency changes and holding, expediting crossings of runways etc (Special, Northolt, Tower #1, Tower #2, Ground, then "Delivery" for start, then vice versa). Signature would handle the arrival. Not as expensive as Battersea Heliport!
Luton - note there are recent changes to VFR reporting points and routings for helis (NOTAM'd).
Stansted - Route via VRPs, arrive at point "F" on the northern edge of the airfield, taxi round (a long way) to Air Harrods for parking /fuel.
Can't give advice on costs as I don't get directly involved.