Usual term

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Note added at 15 mins (2013-11-08 10:52:13 GMT)
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Perhaps for a larger area, as I´ve just noticed it deals with a sales outlet, we would just say a PERMIT FOR A NO-PARKING ZONE

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Note added at 22 mins (2013-11-08 10:59:52 GMT)
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or PERMIT FOR A KEEP CLEAR ZONE

This seems to be the correct term in the UK, though it appears it does not have to be paid annually, only when applying for the protection marks.

As you know, rules differ between Spain and the UK but I think 'Annual) H-bar markings licence would be understood.

Driveway Protection Markings (also known as H-bars) are advisory road markings which are denoted by a solid white line with end bars situated in front of a driveway.
These road markings are designed to make motorists aware that there is dropped kerb or vehicular access point in that section of road.

http://www.bedford.gov.uk/transport_and_streets/highways/hig...

http://www.medway.gov.uk/transportandstreets/parking/keepcle...

‘H’ Bar Markings (TSRGD Diagram No 1026.1)

3.1 The ‘H’ bar marking can be laid on part of the carriageway which
should be kept clear of parked vehicles at the following locations:

1) Outside an entrance to off street premises (eg driveways)
2) At dropped kerbs provided to aid pedestrians in crossing the road.

3.2 The markings are not legally enforceable however if used sparingly,
may be helpful in discouraging inconsiderate parking especially where
the problem is isolated and a traffic regulation order (waiting
restrictions) could not be justified or be difficult to enforce.

3.3 H’ bar markings will only be considered at private accesses where it
may not be obvious that vehicle access is required and inconsiderate
parking occurs.

3.4 Where two properties share a common access, or where two accesses
form a single continuous access, a single white line across both
accesses only will be permitted. Written permission will be required
from both properties before the marking can be authorised. Cost of
covering both accesses will be the same as for a single access.

3.5 Cost of H’ bar markings will be £100 per access (including a dual
access – see 3.4 above). No charges will be made for ‘H’ bar markings
at dropped kerbed pedestrian crossing areas.

http://www.powys.gov.uk/rep_2007-10-02b1_338b_en.pdf?id=47

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Note added at 28 mins (2013-11-08 11:05:21 GMT)
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Keep Clear Markings (TSRGD Diagram No 1026)

2.1 This is an advisory marking that should be used in mainly urban areas
where the traffic flow to side roads or public accesses are temporarily
blocked due to queues of traffic being generated by another junction.
The two types of location they can be considered are:

i. Where a queue of vehicles waiting at one junction blocks back
across another, thereby obstructing the flow of cross traffic.
ii. At a private entrance used by the general public (eg access to a
supermarket), but only in places where it can genuinely be helpful
in maintaining a smooth traffic flow.

2.2 This road marking is not intended to be used outside a private access
to assist in preventing parked vehicles from restricting access to the
property.

2.3 Introducing this type of road marking is at the benefit of the general
road user and therefore there will be no charge for introducing this type
of marking.

http://www.powys.gov.uk/rep_2007-10-02b1_338b_en.pdf?id=47

Sorry, I've just seen you need the term for a retail outlet, not a private home. According to the UK governement, the correct term is 'Keep Clear Markings'.